Ordnance Survey - Half-Inch Administrative Area Diagrams, England and Wales, 1899-1972
The Administrative Area Diagrams show Administrative Counties, Municipal Boroughs, Urban and Rural Districts, and Civil Parishes, usually as a red overprint on a grey base of topographic mapping. The maps were usually published for each county in England and Wales at a scale of half-inch to the mile or 1:126,720 (metricated to 1:100,000 from the 1960s). On selected sheets, Parliamentary Constituency boundaries are also included (usually shown in green), as well as various Judicial Boundaries, including Commission Of The Peace and Petty Sessional Divisions (usually shown in blue), ca. 1966-73.
The base topographic mapping also shows County Series sheet lines (relating to Six-Inch and 25 inch to the mile maps of published before the Second World War) before the 1940s, and National Grid sheet lines (relating to National Grid maps published after the Second World War) after the 1940s. ( These sheet lines to County Series and National Grid maps are also viewable in our Records viewer ). For London various special maps were also published at the One-Inch to the mile scale (1:63,360).
We have put online all our holdings of these maps which are out-of-copyright, published over 50 years ago.
Similar OS administrative maps of Scotland were published at the Quarter-Inch to the mile scale.
- View the maps with a graphic index of England and Wales
(eg. 'Shropshire', 'Parliamentary', 'Judicial', '1963')
| County | Date of Boundaries | Date of Publication |
|---|---|---|
| Anglesey | Administrative Areas revised: 18/9/1899 | 1900 |
| Anglesey | Administrative Areas revised: 1/8/1924; Parliamentary Areas revised: 1/8/1924 | 1924 |
| Anglesey | Administrative Areas revised: 1/10/1933 | 1934 |
| Anglesey | Administrative Areas revised: 1/10/1933; Parliamentary Areas revised: 1/10/1933 | 1934 |
| Anglesey | Administrative Areas revised: 1/7/1933 | 1933 |
| Anglesey | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Anglesey | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Anglesey | Administrative Areas revised: 1/6/1951; Parliamentary Areas revised: 1/6/1951 | 1951 |
| Anglesey | Administrative Areas revised: 1/6/1959; Parliamentary Areas revised: 1/6/1959 | 1951 |
| Anglesey | Administrative Areas revised: 1/6/1959 | 1951 |
| Anglesey | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1951 |
| Anglesey | Administrative Areas revised: 1/6/1962 | 1951 |
| Anglesey | Administrative Areas revised: 1/4/1964 | 1951 |
| Anglesey | Administrative Areas revised: 1/5/1967 | 1951 |
| Anglesey | Administrative Areas revised: 1/5/1967; Parliamentary Areas revised: 1/5/1967 | 1951 |
| Anglesey | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1951 |
| Anglesey and Caernarvonshire | Administrative Areas revised: 1/6/1971; Parliamentary Areas revised: 1/6/1971 | 1971 |
| Anglesey and Caernarvonshire | Administrative Areas revised: 1/6/1971; Judicial Areas revised: 1/6/1971 | 1971 |
| Bedfordshire | Administrative Areas revised: 16/11/1899 | 1900 |
| Bedfordshire | Administrative Areas revised: 30/9/1922; Parliamentary Areas revised: 30/9/1922 | 1922 |
| Bedfordshire | Administrative Areas revised: 10/7/1932 | ca. 1933 |
| Bedfordshire | Administrative Areas revised: 1/4/1934 | 1934 |
| Bedfordshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Bedfordshire | Administrative Areas revised: 1/3/1946 | 1946 |
| Bedfordshire | Administrative Areas revised: 1/3/1946; Parliamentary Areas revised: 1/3/1946 | ca. 1946 |
| Bedfordshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Bedfordshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/6/1958; Parliamentary Areas revised: 1/6/1958 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/1/1959 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/10/1960 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/3/1962 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/3/1962; Parliamentary Areas revised: 1/3/1962 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/7/1964 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/9/1965 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/9/1965; Parliamentary Areas revised: 1/9/1965 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/4/1965 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1949 |
| Bedfordshire | Administrative Areas revised: 1/1/1967; Parliamentary Areas revised: 1/1/1967 | 1967 |
| Bedfordshire | Administrative Areas revised: 1/1/1967; Judicial Areas revised: 1/1/1967 | 1967 |
| Bedfordshire | Administrative Areas revised: 1/4/1969; Parliamentary Areas revised: 1/4/1969 | 1969 |
| Bedfordshire | Administrative Areas revised: 1/4/1969; Judicial Areas revised: 1/4/1969 | 1969 |
| Bedfordshire | Administrative Areas revised: 1/5/1971; Parliamentary Areas revised: 1/5/1971 | 1971 |
| Berkshire | Administrative Areas revised: 19/7/1899 | 1900 |
| Berkshire | Administrative Areas revised: 1/6/1921; Parliamentary Areas revised: 1/6/1921 | 1921 |
| Berkshire | Administrative Areas revised: 31/1/1928; Parliamentary Areas revised: 31/1/1928 | 1928 |
| Berkshire | Administrative Areas revised: 14/4/1932 | 1932 |
| Berkshire | Administrative Areas revised: 1/4/1934 | 1935 |
| Berkshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1935 |
| Berkshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | ca. 1945 |
| Berkshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Berkshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Berkshire | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Berkshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Berkshire | Administrative Areas revised: 1/9/1954; Parliamentary Areas revised: 1/9/1954 | 1949 |
| Berkshire | Administrative Areas revised: 1/9/1955 | 1949 |
| Berkshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Berkshire | Administrative Areas revised: 1/8/1958; Parliamentary Areas revised: 1/8/1958 | 1949 |
| Berkshire | Administrative Areas revised: 1/1/1959 | 1949 |
| Berkshire | Administrative Areas revised: 1/4/1960 | 1949 |
| Berkshire | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/1/1962 | 1949 |
| Berkshire | Administrative Areas revised: 1/1/1962 | 1949 |
| Berkshire | Administrative Areas revised: 1/10/1963 | 1949 |
| Berkshire | Administrative Areas revised: 1/10/1963; Parliamentary Areas revised: 1/10/1963 | 1949 |
| Berkshire | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Berkshire | Administrative Areas revised: 1/4/1967; Parliamentary Areas revised: 1/4/1967 | 1967 |
| Berkshire | Administrative Areas revised: 1/10/1969; Parliamentary Areas revised: 1/10/1969 | ca. 1969 |
| Berkshire | Administrative Areas revised: 1/5/1971; Parliamentary Areas revised: 1/5/1971 | 1971 |
| Berkshire | Administrative Areas revised: 1/5/1971; Judicial Areas revised: 1/5/1971 | 1971 |
| Berkshire | Administrative Areas revised: 1/8/1972; Parliamentary Areas revised: 1/8/1972 | 1972 |
| Berkshire | Administrative Areas revised: 1/8/1972; Judicial Areas revised: 1/8/1972 | 1972 |
| Brecknockshire | Administrative Areas revised: 9/11/1899 | 1900 |
| Brecknockshire | Administrative Areas revised: 5/3/1925; Parliamentary Areas revised: 5/3/1925 | 1925 |
| Brecknockshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Brecknockshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Brecknockshire | Administrative Areas revised: 1/4/1934 | 1934 |
| Brecknockshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Brecknockshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Brecknockshire | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Brecknockshire | Administrative Areas revised: 1950; Parliamentary Areas revised: 3/2/1950 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/5/1957; Parliamentary Areas revised: 1/5/1957 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/7/1961; Parliamentary Areas revised: 1/7/1961 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/7/1961 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/9/1964; Parliamentary Areas revised: 1/9/1964 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/9/1964 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/1/1967 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/1/1967; Parliamentary Areas revised: 1/1/1967 | 1948 |
| Brecknockshire | Administrative Areas revised: 1/9/1971; Parliamentary Areas revised: 1/9/1971 | 1971 |
| Brecknockshire | Administrative Areas revised: 1/9/1971; Judicial Areas revised: 1/9/1971 | 1971 |
| Buckinghamshire | Administrative Areas revised: 5/10/1899 | 1900 |
| Buckinghamshire | Administrative Areas revised: 1/11/1921; Parliamentary Areas revised: 1/11/1921 | 1922 |
| Buckinghamshire | Administrative Areas revised: 31/1/1928; Parliamentary Areas revised: 31/1/1928 | 1928 |
| Buckinghamshire | Administrative Areas revised: 14/7/1932 | 1932 |
| Buckinghamshire | Administrative Areas revised: 1/4/1934 | 1935 |
| Buckinghamshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1935 |
| Buckinghamshire | Administrative Areas revised: 1/8/1945 | ca. 1946 |
| Buckinghamshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | ca. 1946 |
| Buckinghamshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | ca. 1946 |
| Buckinghamshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Buckinghamshire | Administrative Areas revised: 1/6/1956 | ca. 1956 |
| Buckinghamshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/11/1961; Parliamentary Areas revised: 1/11/1961 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/11/1961 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/7/1962; Parliamentary Areas revised: 1/7/1962 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/7/1962 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/1/1964 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/7/1967; Parliamentary Areas revised: 1/7/1967 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/7/1967 | 1954 |
| Buckinghamshire | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1968 |
| Buckinghamshire | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Buckinghamshire | Administrative Areas revised: 1/2/1971; Judicial Areas revised: 1/2/1971 | 1971 |
| Buckinghamshire | Administrative Areas revised: 1/2/1971; Parliamentary Areas revised: 1/2/1971 | 1971 |
| Caernarvonshire | Administrative Areas revised: 7/9/1899 | 1900 |
| Caernarvonshire | Administrative Areas revised: 1/8/1924; Parliamentary Areas revised: 1/8/1924 | 1924 |
| Caernarvonshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Caernarvonshire | Administrative Areas revised: 9/9/1935; Parliamentary Areas revised: 9/9/1935 | 1936 |
| Caernarvonshire | Administrative Areas revised: 9/9/1935 | 1936 |
| Caernarvonshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Caernarvonshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Caernarvonshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Caernarvonshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/1/1959 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/5/1961; Parliamentary Areas revised: 1/5/1961 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/5/1961 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/9/1964; Parliamentary Areas revised: 1/9/1964 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/9/1964 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/1/1967 | 1954 |
| Caernarvonshire | Administrative Areas revised: 1/1/1967; Parliamentary Areas revised: 1/1/1967 | 1954 |
| Cambridgeshire | Administrative Areas revised: 31/8/1899 | 1900 |
| Cambridgeshire | Administrative Areas revised: 21/2/1924; Parliamentary Areas revised: 21/2/1924 | 1924 |
| Cambridgeshire | Administrative Areas revised: 1/3/1930; Parliamentary Areas revised: 1/3/1930 | 1930 |
| Cambridgeshire | Administrative Areas revised: 26/4/1932 | 1932 |
| Cambridgeshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | ca. 1935 |
| Cambridgeshire | Administrative Areas revised: 1/4/1934 | 1934 |
| Cambridgeshire | Administrative Areas revised: 1/4/1946; Parliamentary Areas revised: 1/4/1946 | ca. 1946 |
| Cambridgeshire | Administrative Areas revised: 1/4/1946 | ca. 1946 |
| Cambridgeshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Cambridgeshire | Administrative Areas revised: 1/5/1959; Parliamentary Areas revised: 1/5/1959 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/5/1959 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/8/1960 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/8/1960; Parliamentary Areas revised: 1/8/1960 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/10/1963; Parliamentary Areas revised: 1/10/1963 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/4/1965 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/6/1966; Parliamentary Areas revised: 1/6/1966 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/6/1966 | 1954 |
| Cambridgeshire | Administrative Areas revised: 1/2/1967; Judicial Areas revised: 1/2/1967 | 1967 |
| Cambridgeshire | Administrative Areas revised: 1/2/1967; Parliamentary Areas revised: 1/2/1967 | 1967 |
| Cambridgeshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Cambridgeshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Cardiganshire | Administrative Areas revised: 8/9/1899 | 1900 |
| Cardiganshire | Administrative Areas revised: 21/9/1925; Parliamentary Areas revised: 21/9/1925 | 1925 |
| Cardiganshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Cardiganshire | Administrative Areas revised: 1/4/1934 | 1935 |
| Cardiganshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1935 |
| Cardiganshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Cardiganshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Cardiganshire | Administrative Areas revised: ca. 1951; Parliamentary Areas revised: 1/6/1951 | 1951 |
| Cardiganshire | Administrative Areas revised: ca. 1954 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/10/1956 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/2/1963; Parliamentary Areas revised: 1/2/1963 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/2/1963 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/2/1965 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/1/1967; Parliamentary Areas revised: 1/1/1967 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/1/1967 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/10/1968 | 1949 |
| Cardiganshire | Administrative Areas revised: 1/10/1971; Judicial Areas revised: 1/10/1971 | 1971 |
| Cardiganshire | Administrative Areas revised: 1/10/1971; Parliamentary Areas revised: 1/10/1971 | 1971 |
| Carmarthenshire | Administrative Areas revised: 13/9/1899 | 1900 |
| Carmarthenshire | Administrative Areas revised: 1/5/1925; Parliamentary Areas revised: 1/5/1925 | 1925 |
| Carmarthenshire | Administrative Areas revised: 1/6/1932 | 1932 |
| Carmarthenshire | Administrative Areas revised: 31/12/1935; Parliamentary Areas revised: 31/12/1935 | 1936 |
| Carmarthenshire | Administrative Areas revised: 31/12/1935 | 1936 |
| Carmarthenshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Carmarthenshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Carmarthenshire | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Carmarthenshire | Administrative Areas revised: ca. 1950; Parliamentary Areas revised: 3/2/1950 | 1947 |
| Carmarthenshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1/4/1955 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/7/1958; Parliamentary Areas revised: 1/7/1958 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/7/1958 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/9/1960 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/9/1960; Parliamentary Areas revised: 1/9/1960 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/3/1963; Parliamentary Areas revised: 1/3/1963 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/3/1963 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/3/1965 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/10/1969; Parliamentary Areas revised: 1/10/1969 | 1949 |
| Carmarthenshire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Carmarthenshire | Administrative Areas revised: 1/4/1971; Judicial Areas revised: 1/4/1971 | 1971 |
| Cheshire | Administrative Areas revised: 28/3/1900 | 1900 |
| Cheshire | Administrative Areas revised: 30/6/1921; Parliamentary Areas revised: 30/6/1921 | 1921 |
| Cheshire | Administrative Areas revised: 1/11/1927; Parliamentary Areas revised: 1/11/1927 | 1927 |
| Cheshire | Administrative Areas revised: 15/6/1932 | 1932 |
| Cheshire | Administrative Areas revised: 1/6/1937; Parliamentary Areas revised: 1/6/1937 | 1937 |
| Cheshire | Administrative Areas revised: 1/6/1937 | 1937 |
| Cheshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | ca. 1948 |
| Cheshire | Administrative Areas revised: 1/4/1948; Parliamentary Areas revised: 1945 | ca. 1948 |
| Cheshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Cheshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Cheshire | Administrative Areas revised: 1/2/1956 | 1949 |
| Cheshire | Administrative Areas revised: 1/7/1958; Parliamentary Areas revised: 1/7/1958 | 1949 |
| Cheshire | Administrative Areas revised: 1/1/1959 | 1949 |
| Cheshire | Administrative Areas revised: 1/3/1961 | 1949 |
| Cheshire | Administrative Areas revised: 1/3/1961; Parliamentary Areas revised: 1/3/1961 | 1949 |
| Cheshire | Administrative Areas revised: 1/4/1963; Parliamentary Areas revised: 1/4/1963 | 1949 |
| Cheshire | Administrative Areas revised: 1/4/1963 | 1949 |
| Cheshire | Administrative Areas revised: 1/9/1965; Parliamentary Areas revised: 1/9/1965 | 1949 |
| Cheshire | Administrative Areas revised: 1/9/1965 | 1949 |
| Cheshire | Administrative Areas revised: 1/6/1968; Judicial Areas revised: 1/6/1968 | 1968 |
| Cheshire | Administrative Areas revised: 1/6/1968; Parliamentary Areas revised: 1/6/1968 | 1968 |
| Cheshire | Administrative Areas revised: 1/9/1971; Judicial Areas revised: 1/9/1971 | 1971 |
| Cheshire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Cornwall | Administrative Areas revised: 15/9/1899 | 1900 |
| Cornwall | Administrative Areas revised: 1/9/1921; Parliamentary Areas revised: 1/9/1921 | 1922 |
| Cornwall | Administrative Areas revised: 31/1/1928; Parliamentary Areas revised: 31/1/1928 | 1928 |
| Cornwall | Administrative Areas revised: 1/1/1932 | 1932 |
| Cornwall | Administrative Areas revised: 1/10/1935 | 1936 |
| Cornwall | Administrative Areas revised: 1/10/1935; Parliamentary Areas revised: 1/10/1935 | 1936 |
| Cornwall | Administrative Areas revised: 1/12/1945 | 1946 |
| Cornwall | Administrative Areas revised: 1/12/1945; Parliamentary Areas revised: 1/12/1945 | 1946 |
| Cornwall | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Cornwall | Administrative Areas revised: 1954 | 1949 |
| Cornwall | Administrative Areas revised: 1/2/1956; Parliamentary Areas revised: 3/2/1950 | 1949 |
| Cornwall | Administrative Areas revised: 1/11/1957 | 1949 |
| Cornwall | Administrative Areas revised: 1/10/1960; Parliamentary Areas revised: 1/10/1960 | 1949 |
| Cornwall | Administrative Areas revised: 1/10/1960 | 1949 |
| Cornwall | Administrative Areas revised: 1/5/1962; Parliamentary Areas revised: 1/5/1962 | 1949 |
| Cornwall | Administrative Areas revised: 1/5/1962 | 1949 |
| Cornwall | Administrative Areas revised: 1/9/1964 | 1949 |
| Cornwall | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Cornwall | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Cornwall | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | ca. 1967 |
| Cornwall | Administrative Areas revised: 1/4/1967; Parliamentary Areas revised: 1/4/1967 | ca. 1967 |
| Cornwall | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | ca. 1968 |
| Cornwall | Administrative Areas revised: 1/5/1971; Parliamentary Areas revised: 1/5/1971 | 1971 |
| Cumberland | Administrative Areas revised: 1/3/1900 | 1900 |
| Cumberland | Administrative Areas revised: 1/11/1924; Parliamentary Areas revised: 1/11/1924 | 1924 |
| Cumberland | Administrative Areas revised: 3/2/1932 | 1932 |
| Cumberland | Administrative Areas revised: 1/4/1935; Parliamentary Areas revised: 1/4/1935 | 1935 |
| Cumberland | Administrative Areas revised: 1/4/1935 | 1935 |
| Cumberland | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | ca. 1946 |
| Cumberland | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Cumberland | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Cumberland | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Cumberland | Administrative Areas revised: 1954 | 1949 |
| Cumberland | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Cumberland | Administrative Areas revised: 1/4/1959; Parliamentary Areas revised: 1/4/1959 | 1949 |
| Cumberland | Administrative Areas revised: 1/4/1959 | 1949 |
| Cumberland | Administrative Areas revised: 1/6/1961; Parliamentary Areas revised: 1/6/1961 | 1949 |
| Cumberland | Administrative Areas revised: 1/6/1961 | 1949 |
| Cumberland | Administrative Areas revised: 1/10/1963; Parliamentary Areas revised: 1/10/1963 | 1949 |
| Cumberland | Administrative Areas revised: 1/10/1963 | 1949 |
| Cumberland | Administrative Areas revised: 1/5/1967; Parliamentary Areas revised: 1/5/1967 | 1949 |
| Cumberland | Administrative Areas revised: 1/5/1967 | 1949 |
| Cumberland | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Cumberland | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1968 |
| Cumberland | Administrative Areas revised: 1/6/1972; Parliamentary Areas revised: 1/6/1972 | 1972 |
| Denbighshire | Administrative Areas revised: 15/12/1899 | 1900 |
| Denbighshire | Administrative Areas revised: 4/5/1924; Parliamentary Areas revised: 4/5/1924 | 1924 |
| Denbighshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Denbighshire | Administrative Areas revised: 1/4/1935; Parliamentary Areas revised: 1/4/1935 | 1936 |
| Denbighshire | Administrative Areas revised: 1/4/1935 | 1936 |
| Denbighshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Denbighshire | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Denbighshire | Administrative Areas revised: 4/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Denbighshire | Administrative Areas revised: 1/5/1955 | 1949 |
| Denbighshire | Administrative Areas revised: 1/1/1960; Parliamentary Areas revised: 1/1/1960 | 1949 |
| Denbighshire | Administrative Areas revised: 1/1/1960 | 1949 |
| Denbighshire | Administrative Areas revised: 1/11/1962; Parliamentary Areas revised: 1/11/1962 | 1949 |
| Denbighshire | Administrative Areas revised: 1/11/1962 | 1949 |
| Denbighshire | Administrative Areas revised: 1/1/1962 | 1949 |
| Denbighshire | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/1/1962 | 1949 |
| Denbighshire | Administrative Areas revised: 1/1/1965 | 1949 |
| Denbighshire | Administrative Areas revised: 1/10/1966; Parliamentary Areas revised: 1/10/1966 | 1949 |
| Denbighshire | Administrative Areas revised: 1/10/1966 | 1949 |
| Denbighshire and Flintshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Denbighshire and Flintshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Derbyshire | Administrative Areas revised: 24/10/1899 | 1900 |
| Derbyshire | Administrative Areas revised: 30/12/1922; Parliamentary Areas revised: 30/12/1922 | 1923 |
| Derbyshire | Administrative Areas revised: 14/7/1932 | 1932 |
| Derbyshire | Administrative Areas revised: 1/10/1935; Parliamentary Areas revised: 1/10/1935 | 1936 |
| Derbyshire | Administrative Areas revised: 1/10/1935 | 1936 |
| Derbyshire | Administrative Areas revised: 1/9/1943; Parliamentary Areas revised: 1/9/1943 | ca. 1944 |
| Derbyshire | Administrative Areas revised: 1/3/1946 | ca. 1946 |
| Derbyshire | Administrative Areas revised: 1/3/1946; Parliamentary Areas revised: 1/3/1946 | ca. 1946 |
| Derbyshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Derbyshire | Administrative Areas revised: ca. 1953; Parliamentary Areas revised: 1/12/1953 | 1949 |
| Derbyshire | Administrative Areas revised: ca. 1954 | 1949 |
| Derbyshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Derbyshire | Administrative Areas revised: 1/11/1957 | 1949 |
| Derbyshire | Administrative Areas revised: 1/1/1959 | 1949 |
| Derbyshire | Administrative Areas revised: 1/1/1959; Parliamentary Areas revised: 1/12/1958 | 1949 |
| Derbyshire | Administrative Areas revised: 1/8/1960; Parliamentary Areas revised: 1/8/1960 | 1949 |
| Derbyshire | Administrative Areas revised: 1/8/1960 | 1949 |
| Derbyshire | Administrative Areas revised: 1/2/1962; Parliamentary Areas revised: 1/2/1962 | 1949 |
| Derbyshire | Administrative Areas revised: 1/6/1964; Parliamentary Areas revised: 1/6/1964 | 1949 |
| Derbyshire | Administrative Areas revised: 1/6/1964 | 1949 |
| Derbyshire | Administrative Areas revised: 1/8/1966 | 1949 |
| Derbyshire | Administrative Areas revised: 1/8/1966; Parliamentary Areas revised: 1/8/1966 | 1949 |
| Derbyshire | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1949 |
| Derbyshire | Administrative Areas revised: 1/9/1967 | 1949 |
| Derbyshire | Administrative Areas revised: 1/5/1968; Parliamentary Areas revised: 1/5/1968 | 1968 |
| Derbyshire | Administrative Areas revised: 1/5/1968; Judicial Areas revised: 1/5/1968 | 1968 |
| Derbyshire | Administrative Areas revised: 1/2/1971; Parliamentary Areas revised: 1/7/1971 | 1971 |
| Devonshire | Administrative Areas revised: 26/10/1899 | 1900 |
| Devonshire | Administrative Areas revised: 1/9/1921; Parliamentary Areas revised: 1/9/1921 | 1922 |
| Devonshire | Administrative Areas revised: 1/9/1921; Parliamentary Areas revised: 1/9/1921 | 1922 |
| Devonshire | Administrative Areas revised: 1/10/1928; Parliamentary Areas revised: 1/10/1928 | 1928 |
| Devonshire | Administrative Areas revised: 19/7/1928; Parliamentary Areas revised: 19/7/1928 | 1928 |
| Devonshire | Administrative Areas revised: 30/6/1930; Parliamentary Areas revised: 30/6/1930 | ca. 1930 |
| Devonshire | Administrative Areas revised: 30/6/1930; Parliamentary Areas revised: 30/6/1930 | ca. 1930 |
| Devonshire | Administrative Areas revised: 1/10/1936 | 1936 |
| Devonshire | Administrative Areas revised: 1/10/1936; Parliamentary Areas revised: 1/10/1936 | 1936 |
| Devonshire | Administrative Areas revised: 1/10/1936; Parliamentary Areas revised: 1/10/1936 | 1936 |
| Devonshire | Administrative Areas revised: 1/10/1936 | 1936 |
| Devonshire | Administrative Areas revised: 1/8/1945 | 1946 |
| Devonshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Devonshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Devonshire | Administrative Areas revised: 1/3/1945 | 1946 |
| Devonshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | ca. 1946 |
| Devonshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | ca. 1946 |
| Devonshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Devonshire | Administrative Areas revised: 1951; Parliamentary Areas revised: 1/6/1951 | 1951 |
| Devonshire | Administrative Areas revised: 1954 | 1949 |
| Devonshire | Administrative Areas revised: 1/6/1955 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1956; Parliamentary Areas revised: 1/4/1956 | 1949 |
| Devonshire | Administrative Areas revised: 1/11/1959 | 1949 |
| Devonshire | Administrative Areas revised: 1/6/1959 | 1949 |
| Devonshire | Administrative Areas revised: 1/3/1959; Parliamentary Areas revised: 1/3/1959 | 1949 |
| Devonshire | Administrative Areas revised: 1/11/1960; Parliamentary Areas revised: 1/11/1960 | 1949 |
| Devonshire | Administrative Areas revised: 1/11/1960 | 1949 |
| Devonshire | Administrative Areas revised: 1/11/1961 | 1949 |
| Devonshire | Administrative Areas revised: 1/11/1961; Parliamentary Areas revised: 1/11/1961 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1963; Parliamentary Areas revised: 1/4/1963 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1963 | 1949 |
| Devonshire | Administrative Areas revised: 1/3/1964; Parliamentary Areas revised: 1/3/1964 | 1949 |
| Devonshire | Administrative Areas revised: 1/3/1964 | 1949 |
| Devonshire | Administrative Areas revised: 1/10/1965 | 1949 |
| Devonshire | Administrative Areas revised: 1/10/1965; Parliamentary Areas revised: 1/10/1965 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1965 | 1949 |
| Devonshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Devonshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Devonshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Devonshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Devonshire | Administrative Areas revised: 1/2/1966; Parliamentary Areas revised: 1/2/1966 | 1949 |
| Devonshire | Administrative Areas revised: 1/2/1966 | 1949 |
| Devonshire | Administrative Areas revised: 1/6/1967; Parliamentary Areas revised: 1/6/1967 | ca. 1967 |
| Devonshire | Administrative Areas revised: 1/6/1967; Judicial Areas revised: 1/6/1967 | ca. 1967 |
| Devonshire | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Devonshire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1969 |
| Devonshire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1969 |
| Devonshire | Administrative Areas revised: 1/6/1968; Parliamentary Areas revised: 1/6/1968 | 1967 |
| Devonshire | Administrative Areas revised: 1/6/1968; Judicial Areas revised: 1/6/1968 | 1967 |
| Devonshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Devonshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Devonshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Devonshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Devonshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Dorset | Administrative Areas revised: 25/9/1899 | 1900 |
| Dorset | Administrative Areas revised: 1/7/1921; Parliamentary Areas revised: 1/7/1921 | 1921 |
| Dorset | Administrative Areas revised: 1/3/1930; Parliamentary Areas revised: 1/3/1930 | 1930 |
| Dorset | Administrative Areas revised: 1/2/1930; Parliamentary Areas revised: 1/2/1930 | ca. 1930 |
| Dorset | Administrative Areas revised: 1/4/1933 | 1933 |
| Dorset | Administrative Areas revised: 1/4/1933; Parliamentary Areas revised: 1/4/1933 | 1933 |
| Dorset | Administrative Areas revised: 9/3/1933 | 1933 |
| Dorset | Administrative Areas revised: 1/6/1943; Parliamentary Areas revised: 1/6/1943 | ca. 1944 |
| Dorset | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Dorset | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Dorset | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Dorset | Administrative Areas revised: 1/1/1949; Parliamentary Areas revised: 1918 | ca. 1949 |
| Dorset | Administrative Areas revised: 1950 | 1949 |
| Dorset | Administrative Areas revised: 1/10/1956 | 1954 |
| Dorset | Administrative Areas revised: 1/6/1958; Parliamentary Areas revised: 1/6/1958 | 1954 |
| Dorset | Administrative Areas revised: 1/1/1959 | 1954 |
| Dorset | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/1/1962 | 1954 |
| Dorset | Administrative Areas revised: 1/1/1962 | 1954 |
| Dorset | Administrative Areas revised: 1/2/1963; Parliamentary Areas revised: 1/6/1963 | 1954 |
| Dorset | Administrative Areas revised: 1/2/1963 | 1954 |
| Dorset | Administrative Areas revised: 1/6/1965 | 1954 |
| Dorset | Administrative Areas revised: 1/6/1966 | 1954 |
| Dorset | Administrative Areas revised: 1/6/1967; Judicial Areas revised: 1/6/1967 | 1967 |
| Dorset | Administrative Areas revised: 1/6/1967; Parliamentary Areas revised: 1/6/1967 | 1967 |
| Dorset | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Dorset | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Durham | Administrative Areas revised: 26/2/1900 | 1900 |
| Durham | Administrative Areas revised: 3/9/1924; Parliamentary Areas revised: 3/9/1924 | 1925 |
| Durham | Administrative Areas revised: 31/3/1930; Parliamentary Areas revised: 31/3/1930 | 1930 |
| Durham | Administrative Areas revised: 18/1/1932 | ca. 1932 |
| Durham | Administrative Areas revised: 1/7/1938; Parliamentary Areas revised: 1/7/1938 | 1938 |
| Durham | Administrative Areas revised: 1/7/1938 | 1938 |
| Durham | Administrative Areas revised: 1/6/1943; Parliamentary Areas revised: 1/6/1943 | ca. 1944 |
| Durham | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Durham | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Durham | Administrative Areas revised: 1/7/1947; Parliamentary Areas revised: 1918 | ca. 1947 |
| Durham | Administrative Areas revised: 1/6/1948 | ca. 1948 |
| Durham | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Durham | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Durham | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Durham | Administrative Areas revised: 1/9/1956 | 1949 |
| Durham | Administrative Areas revised: 1/11/1960; Parliamentary Areas revised: 1/11/1960 | 1949 |
| Durham | Administrative Areas revised: 1/11/1960 | 1949 |
| Durham | Administrative Areas revised: 1/3/1964 | 1949 |
| Durham | Administrative Areas revised: 1/3/1964; Parliamentary Areas revised: 1/3/1964 | 1949 |
| Durham | Administrative Areas revised: 1/6/1966 | 1949 |
| Durham | Administrative Areas revised: 1/6/1966; Parliamentary Areas revised: 1/6/1966 | 1949 |
| Durham | Administrative Areas revised: 1/5/1967 | ca. 1967 |
| Durham | Administrative Areas revised: 1/5/1967; Parliamentary Areas revised: 1/5/1967 | ca. 1967 |
| Durham | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Durham | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1968 |
| Durham | Administrative Areas revised: 1/10/1969; Parliamentary Areas revised: 1/10/1969 | ca. 1969 |
| Durham | Administrative Areas revised: 1/10/1969; Judicial Areas revised: 1/10/1969 | ca. 1969 |
| Durham | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Durham | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Essex | Administrative Areas revised: 20/11/1900 | 1900 |
| Essex | Administrative Areas revised: 20/11/1922; Parliamentary Areas revised: 20/11/1922 | 1923 |
| Essex | Administrative Areas revised: 10/1/1927; Parliamentary Areas revised: 10/1/1927 | 1927 |
| Essex | Administrative Areas revised: 31/3/1930; Parliamentary Areas revised: 31/3/1930 | ca. 1930 |
| Essex | Administrative Areas revised: 1/4/1932 | 1932 |
| Essex | Administrative Areas revised: 30/9/1934; Parliamentary Areas revised: 30/9/1934 | 1935 |
| Essex | Administrative Areas revised: 30/9/1934 | 1935 |
| Essex | Administrative Areas revised: 1/5/1943; Parliamentary Areas revised: 1/5/1943 | ca. 1946 |
| Essex | Administrative Areas revised: 1/5/1943; Parliamentary Areas revised: 1/5/1943 | ca. 1943 |
| Essex | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Essex | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1945 | ca. 1947 |
| Essex | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Essex | Administrative Areas revised: 1950 | 1949 |
| Essex | Administrative Areas revised: 1954 | 1949 |
| Essex | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Essex | Administrative Areas revised: 1/6/1958; Parliamentary Areas revised: 1/6/1958 | 1949 |
| Essex | Administrative Areas revised: 1/6/1958 | 1949 |
| Essex | Administrative Areas revised: 1/1/1960; Parliamentary Areas revised: 1/1/1960 | 1949 |
| Essex | Administrative Areas revised: 1/1/1960 | 1949 |
| Essex | Administrative Areas revised: 1/10/1962; Parliamentary Areas revised: 1/10/1962 | 1949 |
| Essex | Administrative Areas revised: 1/10/1962 | 1949 |
| Essex | Administrative Areas revised: 1/4/1964 | 1949 |
| Essex | Administrative Areas revised: 1/4/1964; Parliamentary Areas revised: 1/4/1964 | 1949 |
| Essex | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1949 |
| Essex | Administrative Areas revised: 1/6/1967; Parliamentary Areas revised: 1/6/1967 | 1949 |
| Essex | Administrative Areas revised: 1/6/1967 | 1949 |
| Essex | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1968 |
| Essex | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Essex | Administrative Areas revised: 1/2/1971; Parliamentary Areas revised: 1/2/1971 | 1971 |
| Essex | Administrative Areas revised: 1/2/1971; Judicial Areas revised: 1/2/1971 | 1971 |
| Essex | Administrative Areas revised: 1/6/1972; Parliamentary Areas revised: 1/6/1972 | 1972 |
| Essex | Administrative Areas revised: 1/6/1972; Judicial Areas revised: 1/6/1972 | 1972 |
| Flintshire | Administrative Areas revised: 13/1/1900 | 1900 |
| Flintshire | Administrative Areas revised: 1/8/1924; Parliamentary Areas revised: 1/8/1924 | 1924 |
| Flintshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Flintshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Flintshire | Administrative Areas revised: 1/4/1934 | 1934 |
| Flintshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Flintshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Flintshire | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Flintshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Flintshire | Administrative Areas revised: 1/2/1956; Parliamentary Areas revised: 1/2/1950 | 1954 |
| Flintshire | Administrative Areas revised: 1/3/1958 | 1954 |
| Flintshire | Administrative Areas revised: 1/4/1959 | 1954 |
| Flintshire | Administrative Areas revised: 1/11/1960; Parliamentary Areas revised: 1/11/1960 | 1954 |
| Flintshire | Administrative Areas revised: 1/11/1960 | 1954 |
| Flintshire | Administrative Areas revised: 1/6/1962 | 1954 |
| Flintshire | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1954 |
| Flintshire | Administrative Areas revised: 1/3/1965 | 1954 |
| Flintshire | Administrative Areas revised: 1/11/1967 | 1954 |
| Glamorgan | Administrative Areas revised: 26/1/1900 | 1900 |
| Glamorgan | Administrative Areas revised: 25/2/1924; Parliamentary Areas revised: 25/2/1924 | 1924 |
| Glamorgan | Administrative Areas revised: 21/11/1932 | 1932 |
| Glamorgan | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Glamorgan | Administrative Areas revised: 1/4/1934 | 1934 |
| Glamorgan | Administrative Areas revised: 1/3/1946; Parliamentary Areas revised: 1/3/1946 | ca. 1946 |
| Glamorgan | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Glamorgan | Administrative Areas revised: 1/3/1949 | ca. 1946 |
| Glamorgan | Administrative Areas revised: 1952 | 1949 |
| Glamorgan | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Glamorgan | Administrative Areas revised: 1/3/1958; Parliamentary Areas revised: 1/3/1958 | 1949 |
| Glamorgan | Administrative Areas revised: 1/3/1959 | 1949 |
| Glamorgan | Administrative Areas revised: 1/12/1960 | 1949 |
| Glamorgan | Administrative Areas revised: 1/12/1960; Parliamentary Areas revised: 1/12/1960 | 1949 |
| Glamorgan | Administrative Areas revised: 1/6/1962 | 1949 |
| Glamorgan | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1949 |
| Glamorgan | Administrative Areas revised: 1/3/1964 | 1949 |
| Glamorgan | Administrative Areas revised: 1/12/1966 | 1949 |
| Glamorgan | Administrative Areas revised: 1/9/1967 | 1949 |
| Glamorgan | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1949 |
| Glamorgan | Administrative Areas revised: 1/3/1970; Judicial Areas revised: 1/3/1970 | 1970 |
| Glamorgan | Administrative Areas revised: 1/3/1970; Parliamentary Areas revised: 1/3/1970 | 1970 |
| Glamorgan | Administrative Areas revised: 1/8/1972; Parliamentary Areas revised: 1/8/1972 | 1972 |
| Gloucestershire | Administrative Areas revised: 11/11/1899 | 1900 |
| Gloucestershire | Administrative Areas revised: 1/8/1922; Parliamentary Areas revised: 1/8/1922 | 1922 |
| Gloucestershire | Administrative Areas revised: 23/5/1928; Parliamentary Areas revised: 23/5/1928 | 1928 |
| Gloucestershire | Administrative Areas revised: 18/11/1932 | 1932 |
| Gloucestershire | Administrative Areas revised: 1/7/1936; Parliamentary Areas revised: 1/7/1936 | 1936 |
| Gloucestershire | Administrative Areas revised: 1/7/1936 | 1936 |
| Gloucestershire | Administrative Areas revised: 1/6/1943 | ca. 1944 |
| Gloucestershire | Administrative Areas revised: 1/6/1943; Parliamentary Areas revised: 1/6/1943 | ca. 1944 |
| Gloucestershire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Gloucestershire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Gloucestershire | Administrative Areas revised: 1/12/1949 | ca. 1949 |
| Gloucestershire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Gloucestershire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/6/1958; Parliamentary Areas revised: 1/6/1958 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/3/1958 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/3/1961; Parliamentary Areas revised: 1/3/1961 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/3/1961 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/9/1963; Parliamentary Areas revised: 1/9/1963 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/9/1963 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/5/1965; Parliamentary Areas revised: 1/5/1965 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/5/1965 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/2/1966; Parliamentary Areas revised: 1/2/1966 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/2/1966; Parliamentary Areas revised: 1/2/1966 | 1949 |
| Gloucestershire | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Gloucestershire | Administrative Areas revised: 1/4/1967; Parliamentary Areas revised: 1/4/1967 | 1967 |
| Gloucestershire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1967 |
| Gloucestershire | Administrative Areas revised: 1/4/1971; Judicial Areas revised: 1/4/1971 | 1971 |
| Gloucestershire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Gloucestershire | Administrative Areas revised: 1/6/1972; Parliamentary Areas revised: 1/6/1972 | 1972 |
| Hampshire and Isle of Wight | Administrative Areas revised: 11/12/1899 | 1900 |
| Hampshire and Isle of Wight | Administrative Areas revised: 2/4/1921; Parliamentary Areas revised: 2/4/1921 | 1921 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/10/1927; Parliamentary Areas revised: 1/10/1927 | 1927 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/2/1930 | 1932 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/2/1930; Parliamentary Areas revised: 1/2/1930 | ca. 1930 |
| Hampshire and Isle of Wight | Administrative Areas revised: 31/7/1933; Parliamentary Areas revised: 31/7/1933 | 1933 |
| Hampshire and Isle of Wight | Administrative Areas revised: 31/7/1933 | 1933 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/7/1940 | 1940 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/7/1940; Parliamentary Areas revised: 1/7/1940 | 1940 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/6/1943 | 1944 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/12/1945; Parliamentary Areas revised: 1/12/1945 | ca. 1946 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/12/1945 | ca. 1946 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/6/1948; Parliamentary Areas revised: 1918 | ca. 1949 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/6/1948 | ca. 1949 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1953 | 1949 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/9/1955 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/3/1955; Parliamentary Areas revised: 1955 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/12/1956; Parliamentary Areas revised: 1/12/1956 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1958 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1959 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1959; Parliamentary Areas revised: 1/4/1959 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/6/1961 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/6/1961; Parliamentary Areas revised: 1/6/1961 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/12/1962 | 1954 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/6/1965; Parliamentary Areas revised: 1/6/1965 | 1965 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/10/1966; Parliamentary Areas revised: 1/10/1966 | 1966 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/1/1968 | 1967 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1969; Parliamentary Areas revised: 1/4/1969 | 1969 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1969; Judicial Areas revised: 1/4/1969 | 1969 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1971; Judicial Areas revised: 1/4/1971 | 1971 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/8/1972; Parliamentary Areas revised: 1/8/1972 | 1972 |
| Hampshire and Isle of Wight | Administrative Areas revised: 1/8/1972; Judicial Areas revised: 1/8/1972 | 1972 |
| Herefordshire | Administrative Areas revised: 27/9/1899 | 1899 |
| Herefordshire | Administrative Areas revised: 22/4/1924; Parliamentary Areas revised: 22/4/1924 | 1924 |
| Herefordshire | Administrative Areas revised: 21/11/1932 | 1932 |
| Herefordshire | Administrative Areas revised: 31/3/1935 | 1935 |
| Herefordshire | Administrative Areas revised: 31/3/1935; Parliamentary Areas revised: 31/3/1935 | 1935 |
| Herefordshire | Administrative Areas revised: 1/8/1945 | 1946 |
| Herefordshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Herefordshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Herefordshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1959 |
| Herefordshire | Administrative Areas revised: 1/1/1959 | 1959 |
| Herefordshire | Administrative Areas revised: 1/6/1961; Parliamentary Areas revised: 1/6/1961 | 1961 |
| Herefordshire | Administrative Areas revised: 1/6/1961 | 1961 |
| Herefordshire | Administrative Areas revised: 1/7/1962; Parliamentary Areas revised: 1/7/1962 | 1962 |
| Herefordshire | Administrative Areas revised: 1/7/1962 | 1962 |
| Herefordshire | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1965 |
| Herefordshire | Administrative Areas revised: 1/4/1965 | 1965 |
| Herefordshire | Administrative Areas revised: 1/2/1967; Parliamentary Areas revised: 1/2/1967 | 1967 |
| Herefordshire | Administrative Areas revised: 1/2/1967; Judicial Areas revised: 1/2/1967 | 1967 |
| Herefordshire | Administrative Areas revised: 1/4/1970; Judicial Areas revised: 1/4/1970 | 1970 |
| Herefordshire | Administrative Areas revised: 1/4/1970; Parliamentary Areas revised: 1/4/1970 | 1970 |
| Herefordshire | Administrative Areas revised: 1/2/1972; Judicial Areas revised: 1/2/1972 | 1972 |
| Herefordshire | Administrative Areas revised: 1/2/1972; Parliamentary Areas revised: 1/2/1972 | 1972 |
| Hertfordshire | Administrative Areas revised: 6/12/1899 | 1900 |
| Hertfordshire | Administrative Areas revised: 1/11/1921; Parliamentary Areas revised: 1/11/1921 | 1922 |
| Hertfordshire | Administrative Areas revised: 1/10/1926; Parliamentary Areas revised: 1/10/1926 | 1926 |
| Hertfordshire | Administrative Areas revised: 21/3/1932 | 1932 |
| Hertfordshire | Administrative Areas revised: 1/4/1935; Parliamentary Areas revised: 1/4/1935 | 1936 |
| Hertfordshire | Administrative Areas revised: 1/4/1935 | 1936 |
| Hertfordshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | ca. 1946 |
| Hertfordshire | Administrative Areas revised: 1/8/1945 | ca. 1946 |
| Hertfordshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Hertfordshire | Administrative Areas revised: ca. 1954 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/10/1957 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/10/1960; Parliamentary Areas revised: 1/10/1960 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/1/1960 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/10/1962; Parliamentary Areas revised: 1/10/1962 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/10/1962 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/10/1964 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/6/1965 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/6/1965; Parliamentary Areas revised: 1/6/1965 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/9/1967 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1949 |
| Hertfordshire | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1968 |
| Hertfordshire | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Hertfordshire | Administrative Areas revised: 1/2/1971; Parliamentary Areas revised: 1/2/1971 | 1971 |
| Hertfordshire | Administrative Areas revised: 1/2/1971; Judicial Areas revised: 1/2/1971 | 1971 |
| Hertfordshire | Administrative Areas revised: 1/2/1972; Judicial Areas revised: 1/2/1972 | 1972 |
| Hertfordshire | Administrative Areas revised: 1/2/1972; Parliamentary Areas revised: 1/2/1972 | 1972 |
| Huntingdonshire | Administrative Areas revised: 20/10/1899 | 1900 |
| Huntingdonshire | Administrative Areas revised: 1/2/1924; Parliamentary Areas revised: 1/2/1924 | 1924 |
| Huntingdonshire | Administrative Areas revised: 20/6/1932 | 1932 |
| Huntingdonshire | Administrative Areas revised: 1/10/1935; Parliamentary Areas revised: 1/10/1935 | 1936 |
| Huntingdonshire | Administrative Areas revised: 1/10/1935 | 1936 |
| Huntingdonshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Huntingdonshire | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Huntingdonshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Huntingdonshire | Administrative Areas revised: 1/5/1955 | 1949 |
| Huntingdonshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1949 |
| Huntingdonshire | Administrative Areas revised: 1/11/1961 | 1949 |
| Huntingdonshire | Administrative Areas revised: 1/12/1963; Parliamentary Areas revised: 1/12/1963 | 1964 |
| Huntingdonshire | Administrative Areas revised: 1/12/1963 | 1949 |
| Huntingdonshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Huntingdonshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Huntingdonshire | Administrative Areas revised: 1/2/1967; Judicial Areas revised: 1/2/1967 | 1968 |
| Huntingdonshire | Administrative Areas revised: 1/2/1967; Parliamentary Areas revised: 1/2/1967 | 1966 |
| Huntingdonshire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1968 |
| Huntingdonshire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Huntingdonshire | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Kent | Administrative Areas revised: 14/3/1900 | 1900 |
| Kent | Administrative Areas revised: 1/12/1921; Parliamentary Areas revised: 1/12/1921 | 1922 |
| Kent | Administrative Areas revised: 16/5/1928; Parliamentary Areas revised: 16/5/1928 | 1928 |
| Kent | Administrative Areas revised: 8/4/1932 | ca. 1932 |
| Kent | Administrative Areas revised: 9/11/1935 | 1936 |
| Kent | Administrative Areas revised: 9/11/1935; Parliamentary Areas revised: 9/11/1935 | 1936 |
| Kent | Administrative Areas revised: 1/2/1944 | ca. 1944 |
| Kent | Administrative Areas revised: 1/2/1944; Parliamentary Areas revised: 1/2/1944 | ca. 1944 |
| Kent | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Kent | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Kent | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1945 | ca. 1946 |
| Kent | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1945 | ca. 1946 |
| Kent | Administrative Areas revised: 1/12/1949 | ca. 1949 |
| Kent | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Kent | Administrative Areas revised: 1/1/1949; Parliamentary Areas revised: 1945 | ca. 1949 |
| Kent | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Kent | Administrative Areas revised: 1/1/1957 | 1949 |
| Kent | Administrative Areas revised: 1/2/1958; Parliamentary Areas revised: 1/2/1958 | 1949 |
| Kent | Administrative Areas revised: 1/6/1959 | 1949 |
| Kent | Administrative Areas revised: 1/9/1960 | 1949 |
| Kent | Administrative Areas revised: 1/9/1960; Parliamentary Areas revised: 1/9/1960 | 1949 |
| Kent | Administrative Areas revised: 1/1/1962 | 1949 |
| Kent | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/1/1962 | 1949 |
| Kent | Administrative Areas revised: 1/10/1963 | 1949 |
| Kent | Administrative Areas revised: 1/10/1963; Parliamentary Areas revised: 1/10/1963 | 1949 |
| Kent | Administrative Areas revised: 1/2/1966 | 1949 |
| Kent | Administrative Areas revised: 1/2/1966; Parliamentary Areas revised: 1/2/1966 | 1949 |
| Kent | Administrative Areas revised: 1/3/1967; Parliamentary Areas revised: 1/3/1967 | 1967 |
| Kent | Administrative Areas revised: 1/3/1967; Judicial Areas revised: 1/3/1967 | 1967 |
| Kent | Administrative Areas revised: 1/8/1969; Parliamentary Areas revised: 1/8/1969 | ca. 1969 |
| Kent | Administrative Areas revised: 1/8/1969; Judicial Areas revised: 1/8/1969 | ca. 1969 |
| Kent | Administrative Areas revised: 1/7/1972; Judicial Areas revised: 1/7/1972 | 1972 |
| Kent | Administrative Areas revised: 1/7/1972; Parliamentary Areas revised: 1/7/1972 | 1972 |
| Lancashire | Administrative Areas revised: 6/12/1899 | 1900 |
| Lancashire | Administrative Areas revised: 10/4/1923; Parliamentary Areas revised: 10/4/1923 | 1923 |
| Lancashire | Administrative Areas revised: 26/6/1928; Parliamentary Areas revised: 26/6/1928 | 1928 |
| Lancashire | Administrative Areas revised: 1/1/1932 | 1932 |
| Lancashire | Administrative Areas revised: 1/10/1936; Parliamentary Areas revised: 1/10/1936 | 1936 |
| Lancashire | Administrative Areas revised: 1/10/1936 | 1936 |
| Lancashire | Administrative Areas revised: 1/6/1943 | ca. 1943 |
| Lancashire | Administrative Areas revised: 1/6/1943; Parliamentary Areas revised: 1/6/1943 | ca. 1943 |
| Lancashire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1945 | ca. 1947 |
| Lancashire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Lancashire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1948 |
| Lancashire | Administrative Areas revised: ca. 1951 | 1951 |
| Lancashire | Administrative Areas revised: 1/6/1954; Parliamentary Areas revised: 1955 | 1949 |
| Lancashire | Administrative Areas revised: 1/3/1956 | 1949 |
| Lancashire | Administrative Areas revised: 1/4/1958; Parliamentary Areas revised: 1/2/1958 | 1949 |
| Lancashire | Administrative Areas revised: 1/1/1958 | 1949 |
| Lancashire | Administrative Areas revised: 1/5/1959 | 1949 |
| Lancashire | Administrative Areas revised: 1/6/1960; Parliamentary Areas revised: 1/6/1960 | 1949 |
| Lancashire | Administrative Areas revised: 1/1/1962 | 1949 |
| Lancashire | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/2/1962 | 1949 |
| Lancashire | Administrative Areas revised: 1/12/1963; Parliamentary Areas revised: 1/12/1963 | 1949 |
| Lancashire | Administrative Areas revised: 1/12/1963 | 1949 |
| Lancashire | Administrative Areas revised: 1/11/1965 | 1949 |
| Lancashire | Administrative Areas revised: 1/11/1965; Parliamentary Areas revised: 1/11/1965 | 1949 |
| Lancashire | Administrative Areas revised: 1/9/1967 | 1949 |
| Lancashire | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1949 |
| Lancashire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1969 |
| Lancashire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1969 |
| Lancashire | Administrative Areas revised: 1/7/1969; Judicial Areas revised: 1/7/1969 | 1969 |
| Lancashire | Administrative Areas revised: 1/7/1969; Parliamentary Areas revised: 1/7/1969 | 1969 |
| Leicestershire | Administrative Areas revised: 11/9/1899 | 1900 |
| Leicestershire | Administrative Areas revised: 20/6/1923; Parliamentary Areas revised: 20/6/1923 | 1923 |
| Leicestershire | Administrative Areas revised: 1/7/1932 | 1932 |
| Leicestershire | Administrative Areas revised: 1/2/1937; Parliamentary Areas revised: 1/2/1937 | 1937 |
| Leicestershire | Administrative Areas revised: 1/2/1937 | 1937 |
| Leicestershire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Leicestershire | Administrative Areas revised: 1/8/1945 | 1946 |
| Leicestershire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: ca. 1948 | 1949 |
| Leicestershire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: ca. 1955 | 1949 |
| Leicestershire | Administrative Areas revised: 1/1/1958 | 1949 |
| Leicestershire | Administrative Areas revised: 1/2/1959; Parliamentary Areas revised: 1/2/1959 | 1949 |
| Leicestershire | Administrative Areas revised: 1/10/1960; Parliamentary Areas revised: 1/10/1960 | 1949 |
| Leicestershire | Administrative Areas revised: 1/10/1960 | 1949 |
| Leicestershire | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1949 |
| Leicestershire | Administrative Areas revised: 1/6/1962 | 1949 |
| Leicestershire | Administrative Areas revised: 1/4/1964; Parliamentary Areas revised: 1/4/1964 | 1949 |
| Leicestershire | Administrative Areas revised: 1/4/1964 | 1949 |
| Leicestershire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Leicestershire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1966 |
| Leicestershire | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Leicestershire | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1968 |
| Leicestershire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Leicestershire | Administrative Areas revised: 1/9/1972; Parliamentary Areas revised: 1/9/1972 | 1972 |
| Lincolnshire | Administrative Areas revised: 26/9/1899 | ca. 1899 |
| Lincolnshire | Administrative Areas revised: 31/5/1924; Parliamentary Areas revised: 31/5/1924 | 1924 |
| Lincolnshire | Administrative Areas revised: 31/3/1930; Parliamentary Areas revised: 31/3/1930 | 1930 |
| Lincolnshire | Administrative Areas revised: 1/2/1930 | 1932 |
| Lincolnshire | Administrative Areas revised: 1/2/1930; Parliamentary Areas revised: 1/2/1930 | 1930 |
| Lincolnshire | Administrative Areas revised: 1/11/1937; Parliamentary Areas revised: 1/11/1937 | 1937 |
| Lincolnshire | Administrative Areas revised: 1/11/1937 | 1937 |
| Lincolnshire | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Lincolnshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Lincolnshire | Administrative Areas revised: 1/6/1948; Parliamentary Areas revised: 1918 | 1948 |
| Lincolnshire | Administrative Areas revised: 1/12/1949 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/1/1953; Parliamentary Areas revised: 1/1/1953 | 1949 |
| Lincolnshire | Administrative Areas revised: ca. 1954 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/7/1957; Parliamentary Areas revised: 1/7/1957 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/4/1959 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/10/1960 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/10/1960; Parliamentary Areas revised: 1/10/1960 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/12/1962; Parliamentary Areas revised: 1/12/1962 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/7/1966; Parliamentary Areas revised: 1/7/1966 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/7/1966 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/4/1967; Parliamentary Areas revised: 1/4/1967 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/4/1967 | 1949 |
| Lincolnshire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1969 |
| Lincolnshire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1969 |
| Lincolnshire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1969 |
| Lincolnshire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1969 |
| Lincolnshire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Lincolnshire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Lincolnshire | Administrative Areas revised: 1/2/1972; Parliamentary Areas revised: 1/2/1972 | 1972 |
| Lincolnshire | Administrative Areas revised: 1/2/1972; Parliamentary Areas revised: 1/2/1972 | 1972 |
| London (County of London) | Administrative Areas revised: ca. 1900 | 1900 |
| London (London) | Administrative Areas revised: 31/12/1900 | ca. 1900 |
| London (London) | Administrative Areas revised: 1902 | ca. 1902 |
| London (London) | Administrative Areas revised: 9/3/1922; Parliamentary Areas revised: 9/3/1922 | 1922 |
| London (London) | Administrative Areas revised: 31/1/1928; Parliamentary Areas revised: 31/1/1928 | 1928 |
| London (London) | Administrative Areas revised: 31/12/1935; Parliamentary Areas revised: 31/12/1935 | 1936 |
| London (London) | Administrative Areas revised: 31/12/1935 | 1936 |
| London (London Area) | Administrative Areas revised: 1/1/1936; Parliamentary Areas revised: 1/1/1936 | 1936 |
| London (London) | Administrative Areas revised: 1/6/1943; Parliamentary Areas revised: 1/6/1943 | ca. 1943 |
| London (London) | Administrative Areas revised: 1/6/1946 | ca. 1947 |
| London (London) | Administrative Areas revised: 1/6/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| London (London and surrounding districts) | Local Government Areas 1/4/1949; Parliamentary Areas revised: ca. 1948 | 1946 |
| London (London and surrounding districts) | Local Government Areas 1/1/1954 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas ca. 1955; Parliamentary Areas revised: 1/2/1955 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/6/1954; Parliamentary Areas revised: 1/2/1955 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/12/1956 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/7/1958; Parliamentary Areas revised: 1/7/1958 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/2/1959 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/10/1960; Parliamentary Areas revised: 1/10/1960 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/10/1960 | 1954 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/5/1962; Parliamentary Areas revised: 1/5/1962 | 1962 |
| London (London, Middlesex and surrounding districts) | Local Government Areas 1/5/1962 | 1962 |
| London (Greater London) | Administrative Areas revised: 1/11/1965; Parliamentary Areas revised: 1/5/1965 | 1966 |
| London (Greater London) | Local Government Areas 1/4/1965 | 1964 |
| London (Greater London) | Administrative Areas revised: 1/5/1966; Judicial Areas revised: 1/11/1966 | 1967 |
| London (Greater London) | Administrative Areas revised: 1/1/1968; Judicial Areas revised: 1/1/1968 | 1967 |
| London (Greater London) | Administrative Areas revised: 1/6/1971; Judicial Areas revised: 1/6/1971 | 1971 |
| London (Greater London) | Administrative Areas revised: 1/6/1971; Judicial Areas revised: 1/6/1971 | 1971 |
| London (Greater London) | Administrative Areas revised: 1/4/1972; Parliamentary Areas revised: 1/4/1972 | 1967 |
| Merionethshire | Administrative Areas revised: 7/9/1899 | 1900 |
| Merionethshire | Administrative Areas revised: 1/5/1924; Parliamentary Areas revised: 1/5/1924 | 1924 |
| Merionethshire | Administrative Areas revised: 25/4/1932 | 1932 |
| Merionethshire | Administrative Areas revised: 1/4/1934 | 1934 |
| Merionethshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Merionethshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Merionethshire | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Merionethshire | Administrative Areas revised: 1/1/1953; Parliamentary Areas revised: 1/1/1953 | 1949 |
| Merionethshire | Administrative Areas revised: 1/5/1959; Parliamentary Areas revised: 1/5/1959 | 1949 |
| Merionethshire | Administrative Areas revised: 1/5/1959 | 1949 |
| Merionethshire | Administrative Areas revised: 1/3/1962; Parliamentary Areas revised: 1/3/1962 | 1949 |
| Merionethshire | Administrative Areas revised: 1/3/1962 | 1949 |
| Merionethshire | Administrative Areas revised: 1/10/1964 | 1949 |
| Merionethshire | Administrative Areas revised: 1/5/1967 | 1949 |
| Merionethshire | Administrative Areas revised: 1/5/1967; Parliamentary Areas revised: 1/5/1967 | 1949 |
| Merionethshire | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1949 |
| Merionethshire | Administrative Areas revised: 1/5/1971; Judicial Areas revised: 1/5/1971 | 1971 |
| Merionethshire | Administrative Areas revised: 1/5/1971; Parliamentary Areas revised: 1/5/1971 | 1971 |
| Middlesex | Administrative Areas revised: 31/12/1899 | 1900 |
| Middlesex | Administrative Areas revised: 10/11/1921; Parliamentary Areas revised: 10/11/1921 | 1922 |
| Middlesex | Administrative Areas revised: 30/6/1933 | 1933 |
| Middlesex | Administrative Areas revised: 9/11/1934; Parliamentary Areas revised: 9/11/1934 | 1934 |
| Middlesex | Administrative Areas revised: 9/11/1934 | 1934 |
| Middlesex | Administrative Areas revised: 1/8/1945 | ca. 1946 |
| Middlesex | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | ca. 1946 |
| Middlesex | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1918 | ca. 1949 |
| Monmouthshire | Administrative Areas revised: 13/2/1900 | 1900 |
| Monmouthshire | Administrative Areas revised: 14/8/1925; Parliamentary Areas revised: 14/8/1925 | 1925 |
| Monmouthshire | Administrative Areas revised: 1/11/1932 | 1932 |
| Monmouthshire | Administrative Areas revised: 1/3/1936 | 1936 |
| Monmouthshire | Administrative Areas revised: 1/3/1936; Parliamentary Areas revised: 1/3/1936 | 1936 |
| Monmouthshire | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Monmouthshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Monmouthshire | Administrative Areas revised: ca. 1950; Parliamentary Areas revised: 3/2/1950 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1/4/1955 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/5/1959; Parliamentary Areas revised: 1/5/1959 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/5/1959 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/5/1962; Parliamentary Areas revised: 1/5/1962 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/5/1962 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/2/1965 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/10/1966 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/10/1966; Parliamentary Areas revised: 1/10/1966 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/7/1967; Parliamentary Areas revised: 1/7/1967 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/7/1967 | 1947 |
| Monmouthshire | Administrative Areas revised: 1/3/1970; Parliamentary Areas revised: 1/3/1970 | 1970 |
| Monmouthshire | Administrative Areas revised: 1/3/1970; Judicial Areas revised: 1/3/1970 | 1970 |
| Montgomeryshire | Administrative Areas revised: 9/9/1899 | ca. 1900 |
| Montgomeryshire | Administrative Areas revised: 4/5/1924; Parliamentary Areas revised: 4/5/1924 | ca. 1924 |
| Montgomeryshire | Administrative Areas revised: 1/1/1931 | ca. 1931 |
| Montgomeryshire | Administrative Areas revised: 1/4/1933; Parliamentary Areas revised: 1/4/1933 | ca. 1933 |
| Montgomeryshire | Administrative Areas revised: 1/4/1933 | ca. 1933 |
| Montgomeryshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Montgomeryshire | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Montgomeryshire | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Montgomeryshire | Administrative Areas revised: ca. 1950; Parliamentary Areas revised: 3/2/1950 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/5/1959; Parliamentary Areas revised: 1/5/1959 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/5/1959 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/8/1961; Parliamentary Areas revised: 1/8/1961 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/10/1963 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/2/1965 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/9/1967 | 1946 |
| Montgomeryshire | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1946 |
| Montgomeryshire and Radnorshire | Administrative Areas revised: 1/10/1971; Parliamentary Areas revised: 1/10/1971 | 1971 |
| Montgomeryshire and Radnorshire | Administrative Areas revised: 1/10/1971; Judicial Areas revised: 1/8/1972 | 1971 |
| Norfolk | Administrative Areas revised: 31/10/1899 | 1900 |
| Norfolk | Administrative Areas revised: 15/10/1923; Parliamentary Areas revised: 15/10/1923 | 1923 |
| Norfolk | Administrative Areas revised: 20/6/1929; Parliamentary Areas revised: 20/6/1929 | 1929 |
| Norfolk | Administrative Areas revised: 19/8/1930 | 1930 |
| Norfolk | Administrative Areas revised: 26/9/1932 | 1932 |
| Norfolk | Administrative Areas revised: 1/7/1936; Parliamentary Areas revised: 1/7/1936 | 1936 |
| Norfolk | Administrative Areas revised: 1/7/1936 | 1936 |
| Norfolk | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Norfolk | Administrative Areas revised: 1/7/1946 | 1947 |
| Norfolk | Administrative Areas revised: 22/2/1946; Parliamentary Areas revised: 22/2/1946 | 1946 |
| Norfolk | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | 1948 |
| Norfolk | Administrative Areas revised: 1950 | 1947 |
| Norfolk | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1/4/1955 | 1949 |
| Norfolk | Administrative Areas revised: 1/10/1957 | 1957 |
| Norfolk | Administrative Areas revised: 1/4/1957; Parliamentary Areas revised: 1/4/1957 | 1957 |
| Norfolk | Administrative Areas revised: 1/8/1960 | 1957 |
| Norfolk | Administrative Areas revised: 1/8/1960; Parliamentary Areas revised: 1/8/1960 | 1957 |
| Norfolk | Administrative Areas revised: 1/9/1963 | 1957 |
| Norfolk | Administrative Areas revised: 1/9/1963; Parliamentary Areas revised: 1/9/1963 | 1957 |
| Norfolk | Administrative Areas revised: 1/4/1965 | 1957 |
| Norfolk | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1957 |
| Norfolk | Administrative Areas revised: 1/2/1966 | 1957 |
| Norfolk | Administrative Areas revised: 1/2/1966; Parliamentary Areas revised: 1/2/1966 | 1957 |
| Norfolk | Administrative Areas revised: 1/9/1967 | 1957 |
| Norfolk | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1968 |
| Norfolk | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Norfolk | Administrative Areas revised: 1/5/1971; Parliamentary Areas revised: 1/5/1971 | 1971 |
| Northamptonshire | Administrative Areas revised: 9/12/1899 | 1900 |
| Northamptonshire | Administrative Areas revised: 18/6/1923; Parliamentary Areas revised: 18/6/1923 | 1923 |
| Northamptonshire | Administrative Areas revised: 1/12/1929; Parliamentary Areas revised: 1/12/1929 | 1930 |
| Northamptonshire | Administrative Areas revised: 1/11/1930 | 1930 |
| Northamptonshire | Administrative Areas revised: 31/3/1936 | 1936 |
| Northamptonshire | Administrative Areas revised: 31/3/1936; Parliamentary Areas revised: 31/3/1936 | 1936 |
| Northamptonshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Northamptonshire | Administrative Areas revised: 1/7/1946 | 1947 |
| Northamptonshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | 1949 |
| Northamptonshire | Administrative Areas revised: 1/11/1949 | 1949 |
| Northamptonshire | Administrative Areas revised: 1/1/1949; Parliamentary Areas revised: 1918 | 1949 |
| Northamptonshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/2/1959 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/3/1962; Parliamentary Areas revised: 1/3/1962 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/3/1962 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/10/1965; Parliamentary Areas revised: 1/10/1965 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/10/1965 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/1/1965 | 1954 |
| Northamptonshire | Administrative Areas revised: 1/9/1967; Judicial Areas revised: 1/9/1967 | 1968 |
| Northamptonshire | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1968 |
| Northamptonshire | Administrative Areas revised: 1/2/1970; Judicial Areas revised: 1/2/1970 | 1970 |
| Northamptonshire | Administrative Areas revised: 1/2/1970; Parliamentary Areas revised: 1/2/1970 | 1970 |
| Northamptonshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Northamptonshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Northumberland | Administrative Areas revised: 20/2/1900 | 1900 |
| Northumberland | Administrative Areas revised: 24/6/1925; Parliamentary Areas revised: 24/6/1925 | 1925 |
| Northumberland | Administrative Areas revised: 1/1/1932 | 1932 |
| Northumberland | Administrative Areas revised: 1/3/1936 | 1936 |
| Northumberland | Administrative Areas revised: 1/3/1936; Parliamentary Areas revised: 1/3/1936 | 1936 |
| Northumberland | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Northumberland | Administrative Areas revised: 1/7/1946 | 1946 |
| Northumberland | Administrative Areas revised: 23/2/1946; Parliamentary Areas revised: 23/2/1946 | 1946 |
| Northumberland | Administrative Areas revised: 1/9/1947 | 1947 |
| Northumberland | Administrative Areas revised: 1/9/1947; Parliamentary Areas revised: 1918 | 1947 |
| Northumberland | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | 1949 |
| Northumberland | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Northumberland | Administrative Areas revised: 1/4/1955 | 1949 |
| Northumberland | Administrative Areas revised: 1/4/1959 | 1949 |
| Northumberland | Administrative Areas revised: 1/1/1960; Parliamentary Areas revised: 1/1/1960 | 1949 |
| Northumberland | Administrative Areas revised: 1/1/1960 | 1949 |
| Northumberland | Administrative Areas revised: 1/5/1961 | 1949 |
| Northumberland | Administrative Areas revised: 1/5/1961; Parliamentary Areas revised: 1/5/1961 | 1949 |
| Northumberland | Administrative Areas revised: 1/10/1964 | 1949 |
| Northumberland | Administrative Areas revised: 1/10/1964; Parliamentary Areas revised: 1/10/1964 | 1949 |
| Northumberland | Administrative Areas revised: 1/6/1966; Parliamentary Areas revised: 1/6/1966 | 1949 |
| Northumberland | Administrative Areas revised: 1/6/1966 | 1949 |
| Northumberland | Administrative Areas revised: 1/8/1967; Parliamentary Areas revised: 1/8/1967 | 1949 |
| Northumberland | Administrative Areas revised: 1/6/1968; Judicial Areas revised: 1/6/1968 | 1968 |
| Northumberland | Administrative Areas revised: 1/6/1968; Parliamentary Areas revised: 1/6/1968 | 1968 |
| Northumberland | Administrative Areas revised: 1/2/1972; Parliamentary Areas revised: 1/2/1972 | 1972 |
| Nottinghamshire | Administrative Areas revised: 23/9/1899 | 1900 |
| Nottinghamshire | Administrative Areas revised: 1/12/1921; Parliamentary Areas revised: 1/12/1921 | 1921 |
| Nottinghamshire | Administrative Areas revised: 1/4/1927; Parliamentary Areas revised: 1/4/1927 | 1927 |
| Nottinghamshire | Administrative Areas revised: 21/3/1932 | 1932 |
| Nottinghamshire | Administrative Areas revised: 31/1/1936; Parliamentary Areas revised: 31/1/1936 | 1936 |
| Nottinghamshire | Administrative Areas revised: 31/1/1936 | 1936 |
| Nottinghamshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | 1945 |
| Nottinghamshire | Administrative Areas revised: 1/7/1946 | 1946 |
| Nottinghamshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Nottinghamshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/2/1955; Parliamentary Areas revised: 1955 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/11/1957 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/6/1958; Parliamentary Areas revised: 1/6/1958 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/12/1960 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/12/1960; Parliamentary Areas revised: 1/12/1960 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/2/1962; Parliamentary Areas revised: 1/2/1962 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/2/1962 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/3/1964 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/3/1964; Parliamentary Areas revised: 1/3/1964 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/11/1967; Judicial Areas revised: 1/11/1967 | 1968 |
| Nottinghamshire | Administrative Areas revised: 1/11/1967; Parliamentary Areas revised: 1/11/1967 | 1968 |
| Nottinghamshire | Administrative Areas revised: 1/1/1967; Parliamentary Areas revised: 1/1/1967 | 1949 |
| Nottinghamshire | Administrative Areas revised: 1/8/1970; Parliamentary Areas revised: 1/8/1970 | 1970 |
| Nottinghamshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Nottinghamshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Oxfordshire | Administrative Areas revised: 24/8/1899 | 1900 |
| Oxfordshire | Administrative Areas revised: 7/9/1921; Parliamentary Areas revised: 7/9/1921 | 1922 |
| Oxfordshire | Administrative Areas revised: 29/2/1928; Parliamentary Areas revised: 29/2/1928 | 1928 |
| Oxfordshire | Administrative Areas revised: 14/4/1932 | 1932 |
| Oxfordshire | Administrative Areas revised: 1/4/1933 | 1933 |
| Oxfordshire | Administrative Areas revised: 31/3/1933; Parliamentary Areas revised: 31/3/1933 | 1933 |
| Oxfordshire | Administrative Areas revised: 31/3/1933; Parliamentary Areas revised: 31/3/1933 | 1933 |
| Oxfordshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1947 |
| Oxfordshire | Administrative Areas revised: 1/7/1946 | 1947 |
| Oxfordshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/7/1954 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/6/1958 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/11/1961 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/11/1961; Parliamentary Areas revised: 1/11/1961 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/1/1963 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/1/1963; Parliamentary Areas revised: 1/1/1963 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/7/1966 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/7/1966; Parliamentary Areas revised: 1/7/1966 | 1949 |
| Oxfordshire | Administrative Areas revised: 1/10/1967; Parliamentary Areas revised: 1/10/1967 | 1968 |
| Oxfordshire | Administrative Areas revised: 1/10/1967; Judicial Areas revised: 1/10/1967 | 1968 |
| Oxfordshire | Administrative Areas revised: 1/2/1970; Judicial Areas revised: 1/2/1970 | 1970 |
| Oxfordshire | Administrative Areas revised: 1/2/1970; Parliamentary Areas revised: 1/2/1970 | 1970 |
| Oxfordshire | Administrative Areas revised: 1/8/1972; Judicial Areas revised: 1/8/1972 | 1972 |
| Oxfordshire | Administrative Areas revised: 1/8/1972; Parliamentary Areas revised: 1/8/1972 | 1972 |
| Pembrokeshire | Administrative Areas revised: 9/9/1899 | 1900 |
| Pembrokeshire | Administrative Areas revised: 15/8/1925 | 1925 |
| Pembrokeshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Pembrokeshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Pembrokeshire | Administrative Areas revised: 1/4/1934 | 1934 |
| Pembrokeshire | Administrative Areas revised: 1/7/1946 | 1947 |
| Pembrokeshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Pembrokeshire | Administrative Areas revised: 1/11/1949 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/9/1959 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/5/1959 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/9/1965; Parliamentary Areas revised: 1/9/1965 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/1/1965; Parliamentary Areas revised: 1/1/1965 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/1/1965 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/1/1965 | 1949 |
| Pembrokeshire | Administrative Areas revised: 1/10/1971; Parliamentary Areas revised: 1/10/1971 | 1971 |
| Pembrokeshire | Administrative Areas revised: 1/10/1971; Judicial Areas revised: 1/10/1971 | 1971 |
| Radnorshire | Administrative Areas revised: 12/9/1899 | 1900 |
| Radnorshire | Administrative Areas revised: 6/11/1924; Parliamentary Areas revised: 6/11/1924 | 1924 |
| Radnorshire | Administrative Areas revised: 30/6/1933; Parliamentary Areas revised: 30/6/1933 | 1933 |
| Radnorshire | Administrative Areas revised: 30/6/1933 | 1933 |
| Radnorshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Radnorshire | Administrative Areas revised: 1/7/1946 | 1947 |
| Radnorshire | Administrative Areas revised: 1/6/1951; Parliamentary Areas revised: 1/6/1951 | 1951 |
| Radnorshire | Administrative Areas revised: 1/9/1954 | 1951 |
| Radnorshire | Administrative Areas revised: 1/9/1959; Parliamentary Areas revised: 1/9/1959 | 1951 |
| Radnorshire | Administrative Areas revised: 1/1/1959 | 1951 |
| Radnorshire | Administrative Areas revised: 1/1/1962 | 1951 |
| Radnorshire | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/1/1962 | 1951 |
| Radnorshire | Administrative Areas revised: 1/1/1965 | 1951 |
| Radnorshire | Administrative Areas revised: 1/1/1965; Parliamentary Areas revised: 1/1/1965 | 1951 |
| Radnorshire | Administrative Areas revised: 1/8/1966; Parliamentary Areas revised: 1/8/1966 | 1951 |
| Radnorshire | Administrative Areas revised: 1/8/1966 | 1951 |
| Rutland | Administrative Areas revised: 11/9/1899 | 1900 |
| Rutland | Administrative Areas revised: 1/2/1924; Parliamentary Areas revised: 1/2/1924 | 1924 |
| Rutland | Administrative Areas revised: 31/10/1932; Parliamentary Areas revised: 31/10/1932 | 1933 |
| Rutland | Administrative Areas revised: 31/10/1932 | 1933 |
| Rutland | Administrative Areas revised: 1/7/1946 | 1946 |
| Rutland | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Rutland | Administrative Areas revised: 1/11/1949 | 1949 |
| Rutland | Administrative Areas revised: 1/6/1951; Parliamentary Areas revised: 1/6/1951 | 1951 |
| Rutland | Administrative Areas revised: 1/1/1959 | 1951 |
| Rutland | Administrative Areas revised: 1/3/1960; Parliamentary Areas revised: 1/3/1960 | 1951 |
| Rutland | Administrative Areas revised: 1/3/1960 | 1951 |
| Rutland | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1951 |
| Rutland | Administrative Areas revised: 1/2/1962 | 1951 |
| Rutland | Administrative Areas revised: 1/5/1965; Parliamentary Areas revised: 1/5/1965 | 1951 |
| Rutland | Administrative Areas revised: 1/5/1965 | 1951 |
| Rutland | Administrative Areas revised: 1/7/1966; Parliamentary Areas revised: 1/7/1966 | 1966 |
| Rutland | Administrative Areas revised: 1/7/1966; Parliamentary Areas revised: 1/7/1966 | 1966 |
| Rutland | Administrative Areas revised: 1/7/1966; Judicial Areas revised: 1/7/1966 | 1966 |
| Rutland | Administrative Areas revised: 1/10/1971; Judicial Areas revised: 1/10/1971 | 1971 |
| Rutland | Administrative Areas revised: 1/10/1971; Parliamentary Areas revised: 1/10/1971 | 1971 |
| Shropshire | Administrative Areas revised: 10/10/1899 | 1900 |
| Shropshire | Administrative Areas revised: 1/4/1924; Parliamentary Areas revised: 1/4/1924 | 1924 |
| Shropshire | Administrative Areas revised: 20/2/1928; Parliamentary Areas revised: 20/2/1928 | 1928 |
| Shropshire | Administrative Areas revised: ca. 1932 | 1932 |
| Shropshire | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1936 |
| Shropshire | Administrative Areas revised: 1/4/1934 | 1936 |
| Shropshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | 1945 |
| Shropshire | Administrative Areas revised: 1/4/1946 | 1946 |
| Shropshire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: ca. 1948 | 1949 |
| Shropshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1/4/1949 | 1946 |
| Shropshire | Administrative Areas revised: ca. 1952 | 1949 |
| Shropshire | Administrative Areas revised: 1/2/1959 | 1949 |
| Shropshire | Administrative Areas revised: 1/2/1959; Parliamentary Areas revised: 1/2/1959 | 1949 |
| Shropshire | Administrative Areas revised: 1/10/1963; Parliamentary Areas revised: 1/10/1963 | 1949 |
| Shropshire | Administrative Areas revised: 1/10/1963 | 1949 |
| Shropshire | Administrative Areas revised: 1/9/1964 | 1949 |
| Shropshire | Administrative Areas revised: 1/4/1966 | 1949 |
| Shropshire | Administrative Areas revised: 1/4/1966; Parliamentary Areas revised: 1/4/1966 | 1949 |
| Shropshire | Administrative Areas revised: 1/10/1967; Parliamentary Areas revised: 1/10/1967 | 1968 |
| Shropshire | Administrative Areas revised: 1/10/1967; Judicial Areas revised: 1/10/1967 | 1968 |
| Shropshire | Administrative Areas revised: 1/9/1967 | 1949 |
| Shropshire | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1949 |
| Shropshire | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Shropshire | Administrative Areas revised: 1/11/1969; Parliamentary Areas revised: 1/11/1969 | 1969 |
| Shropshire | Administrative Areas revised: 1/11/1969; Judicial Areas revised: 1/11/1969 | 1969 |
| Shropshire | Administrative Areas revised: 1/1/1972; Judicial Areas revised: 1/1/1972 | 1972 |
| Shropshire | Administrative Areas revised: 1/1/1972; Parliamentary Areas revised: 1/1/1972 | 1972 |
| Somerset | Administrative Areas revised: 3/11/1899 | 1900 |
| Somerset | Administrative Areas revised: 1/12/1921; Parliamentary Areas revised: 1/12/1921 | 1922 |
| Somerset | Administrative Areas revised: 20/9/1928; Parliamentary Areas revised: 20/9/1928 | 1928 |
| Somerset | Administrative Areas revised: 8/3/1932 | 1932 |
| Somerset | Administrative Areas revised: 1/4/1933 | 1935 |
| Somerset | Administrative Areas revised: 1/4/1933; Parliamentary Areas revised: 1/4/1933 | 1935 |
| Somerset | Administrative Areas revised: 1/1/1946 | 1946 |
| Somerset | Administrative Areas revised: 1/1/1946; Parliamentary Areas revised: 1/1/1946 | 1946 |
| Somerset | Administrative Areas revised: 1/11/1946; Parliamentary Areas revised: 1948 | 1948 |
| Somerset | Administrative Areas revised: 1/10/1950 | 1946 |
| Somerset | Administrative Areas revised: ca. 1953 | 1949 |
| Somerset | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1/4/1955 | 1954 |
| Somerset | Administrative Areas revised: 1/2/1958; Parliamentary Areas revised: 1/2/1958 | 1954 |
| Somerset | Administrative Areas revised: 1/2/1958 | 1954 |
| Somerset | Administrative Areas revised: 1/12/1960 | 1954 |
| Somerset | Administrative Areas revised: 1/12/1960; Parliamentary Areas revised: 1/12/1960 | 1954 |
| Somerset | Administrative Areas revised: 1/2/1960 | 1954 |
| Somerset | Administrative Areas revised: 1/2/1962 | 1954 |
| Somerset | Administrative Areas revised: 1/2/1962; Parliamentary Areas revised: 1/2/1962 | 1954 |
| Somerset | Administrative Areas revised: 1/6/1964 | 1954 |
| Somerset | Administrative Areas revised: 1/8/1966; Parliamentary Areas revised: 1/8/1966 | 1966 |
| Somerset | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Somerset | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Somerset | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1968 |
| Somerset | Administrative Areas revised: 1/6/1972; Parliamentary Areas revised: 1/6/1972 | 1972 |
| Staffordshire | Administrative Areas revised: 31/12/1899 | 1900 |
| Staffordshire | Administrative Areas revised: 21/6/1923 | 1923 |
| Staffordshire | Administrative Areas revised: 1/4/1928; Parliamentary Areas revised: 1/4/1928 | 1928 |
| Staffordshire | Administrative Areas revised: 20/6/1932 | 1932 |
| Staffordshire | Administrative Areas revised: 7/12/1934; Parliamentary Areas revised: 7/12/1934 | 1936 |
| Staffordshire | Administrative Areas revised: 7/12/1934 | 1936 |
| Staffordshire | Administrative Areas revised: 1/9/1943; Parliamentary Areas revised: 1/9/1943 | 1943 |
| Staffordshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1945 | 1946 |
| Staffordshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1945 | 1946 |
| Staffordshire | Administrative Areas revised: 1/7/1946 | 1946 |
| Staffordshire | Administrative Areas revised: 1/7/1946 | 1946 |
| Staffordshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | 1949 |
| Staffordshire | Administrative Areas revised: 1/9/1951 | 1949 |
| Staffordshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Staffordshire | Administrative Areas revised: 1/6/1959; Parliamentary Areas revised: 1/6/1959 | 1949 |
| Staffordshire | Administrative Areas revised: 1/1/1959 | 1949 |
| Staffordshire | Administrative Areas revised: 1/3/1960; Parliamentary Areas revised: 1/3/1960 | 1949 |
| Staffordshire | Administrative Areas revised: 1/3/1960 | 1949 |
| Staffordshire | Administrative Areas revised: 1/2/1963 | 1949 |
| Staffordshire | Administrative Areas revised: 1/2/1963; Parliamentary Areas revised: 1/2/1963 | 1949 |
| Staffordshire | Administrative Areas revised: 1/6/1964 | 1949 |
| Staffordshire | Administrative Areas revised: 1/6/1964; Parliamentary Areas revised: 1/6/1964 | 1949 |
| Staffordshire | Administrative Areas revised: 1/6/1965; Parliamentary Areas revised: 1/6/1965 | 1949 |
| Staffordshire | Administrative Areas revised: 1/6/1965 | 1949 |
| Staffordshire | Administrative Areas revised: 1/9/1966; Parliamentary Areas revised: 1/9/1966 | 1966 |
| Staffordshire | Administrative Areas revised: 1/9/1966; Judicial Areas revised: 1/2/1967 | 1966 |
| Staffordshire | Administrative Areas revised: 1/5/1971; Parliamentary Areas revised: 1/5/1971 | 1971 |
| Suffolk | Administrative Areas revised: 28/10/1899 | 1900 |
| Suffolk | Administrative Areas revised: 25/2/1924; Parliamentary Areas revised: 25/2/1924 | 1924 |
| Suffolk | Administrative Areas revised: 30/6/1933 | 1933 |
| Suffolk | Administrative Areas revised: 1/4/1935 | 1936 |
| Suffolk | Administrative Areas revised: 1/4/1935; Parliamentary Areas revised: 1/4/1935 | 1936 |
| Suffolk | Administrative Areas revised: 1/2/1946; Parliamentary Areas revised: 1/2/1946 | 1946 |
| Suffolk | Administrative Areas revised: 1/2/1946 | 1946 |
| Suffolk | Administrative Areas revised: 1/6/1951; Parliamentary Areas revised: 1/6/1951 | 1951 |
| Suffolk | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Suffolk | Administrative Areas revised: 1/7/1956 | 1949 |
| Suffolk | Administrative Areas revised: 1/2/1959; Parliamentary Areas revised: 1/2/1959 | 1949 |
| Suffolk | Administrative Areas revised: 1/2/1959 | 1949 |
| Suffolk | Administrative Areas revised: 1/11/1961; Parliamentary Areas revised: 1/11/1961 | 1949 |
| Suffolk | Administrative Areas revised: 1/11/1961 | 1949 |
| Suffolk | Administrative Areas revised: 1/3/1963; Parliamentary Areas revised: 1/3/1963 | 1949 |
| Suffolk | Administrative Areas revised: 1/3/1963 | 1949 |
| Suffolk | Administrative Areas revised: 1/6/1965; Parliamentary Areas revised: 1/6/1965 | 1949 |
| Suffolk | Administrative Areas revised: 1/6/1965 | 1949 |
| Suffolk | Administrative Areas revised: 1/7/1966; Parliamentary Areas revised: 1/7/1966 | 1949 |
| Suffolk | Administrative Areas revised: 1/7/1966 | 1949 |
| Suffolk | Administrative Areas revised: 1/9/1967; Parliamentary Areas revised: 1/9/1967 | 1968 |
| Suffolk | Administrative Areas revised: 1/9/1967; Judicial Areas revised: 1/9/1967 | 1968 |
| Suffolk | Administrative Areas revised: 1/1/1971; Judicial Areas revised: 1/1/1971 | 1971 |
| Suffolk | Administrative Areas revised: 1/1/1971; Judicial Areas revised: 1/1/1972 | 1971 |
| Surrey | Administrative Areas revised: 8/2/1900 | 1900 |
| Surrey | Administrative Areas revised: 1/9/1921; Parliamentary Areas revised: 1/9/1921 | 1921 |
| Surrey | Administrative Areas revised: 20/1/1927; Parliamentary Areas revised: 20/1/1927 | 1927 |
| Surrey | Administrative Areas revised: 31/3/1932 | 1932 |
| Surrey | Administrative Areas revised: 1/4/1934; Parliamentary Areas revised: 1/4/1934 | 1934 |
| Surrey | Administrative Areas revised: 1/4/1934 | 1934 |
| Surrey | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Surrey | Administrative Areas revised: 1/8/1945 | 1946 |
| Surrey | Administrative Areas revised: 1/11/1949 | 1949 |
| Surrey | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | 1949 |
| Surrey | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Surrey | Administrative Areas revised: 1/1/1960 | 1949 |
| Surrey | Administrative Areas revised: 1/1/1960; Parliamentary Areas revised: 1/1/1960 | 1949 |
| Surrey | Administrative Areas revised: 1/8/1961 | 1949 |
| Surrey | Administrative Areas revised: 1/8/1961; Parliamentary Areas revised: 1/8/1961 | 1949 |
| Surrey | Administrative Areas revised: 1/10/1963 | 1949 |
| Surrey | Administrative Areas revised: 1/10/1963; Parliamentary Areas revised: 1/10/1963 | 1949 |
| Surrey | Administrative Areas revised: 1/11/1965 | 1949 |
| Surrey | Administrative Areas revised: 1/11/1965; Parliamentary Areas revised: 1/11/1965 | 1949 |
| Surrey | Administrative Areas revised: 1/1/1968; Judicial Areas revised: 1/1/1968 | 1968 |
| Surrey | Administrative Areas revised: 1/1/1968; Parliamentary Areas revised: 1/1/1968 | 1968 |
| Surrey | Administrative Areas revised: 1/8/1969; Judicial Areas revised: 1/8/1969 | 1968 |
| Surrey | Administrative Areas revised: 1/2/1971; Parliamentary Areas revised: 1/2/1971 | 1971 |
| Surrey | Administrative Areas revised: 1/8/1973 | 1973 |
| Sussex | Administrative Areas revised: 3/1/1900 | 1900 |
| Sussex | Administrative Areas revised: 1/6/1921; Parliamentary Areas revised: 1/6/1921 | 1921 |
| Sussex | Administrative Areas revised: 1/7/1928; Parliamentary Areas revised: 1/7/1928 | 1928 |
| Sussex | Administrative Areas revised: 1/2/1930; Parliamentary Areas revised: 1/2/1930 | 1930 |
| Sussex | Administrative Areas revised: ca. 1931 | 1931 |
| Sussex | Administrative Areas revised: 1/10/1934; Parliamentary Areas revised: 1/10/1934 | 1934 |
| Sussex | Administrative Areas revised: 1/10/1934 | 1934 |
| Sussex | Administrative Areas revised: 1/6/1944; Parliamentary Areas revised: 1/6/1944 | 1944 |
| Sussex | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Sussex | Administrative Areas revised: 1/8/1945 | 1946 |
| Sussex | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | 1949 |
| Sussex | Administrative Areas revised: ca. 1953 | 1949 |
| Sussex | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Sussex | Administrative Areas revised: 1/4/1959; Parliamentary Areas revised: 1/4/1959 | 1949 |
| Sussex | Administrative Areas revised: 1/4/1959 | 1949 |
| Sussex | Administrative Areas revised: 1/12/1960 | 1949 |
| Sussex | Administrative Areas revised: 1/12/1960; Parliamentary Areas revised: 1/12/1960 | 1949 |
| Sussex | Administrative Areas revised: 1/1/1962 | 1949 |
| Sussex | Administrative Areas revised: 1/1/1962; Parliamentary Areas revised: 1/1/1962 | 1949 |
| Sussex | Administrative Areas revised: 1/3/1963 | 1949 |
| Sussex | Administrative Areas revised: 1/3/1963; Parliamentary Areas revised: 1/3/1963 | 1949 |
| Sussex | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1968 |
| Sussex | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Sussex | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Sussex | Administrative Areas revised: 1/4/1972; Judicial Areas revised: 1/4/1972 | 1972 |
| Warwickshire | Administrative Areas revised: 12/10/1899 | 1900 |
| Warwickshire | Administrative Areas revised: 20/6/1923; Parliamentary Areas revised: 20/6/1923 | 1923 |
| Warwickshire | Administrative Areas revised: 1/4/1929; Parliamentary Areas revised: 1/4/1929 | 1929 |
| Warwickshire | Administrative Areas revised: ca. 1931 | 1931 |
| Warwickshire | Administrative Areas revised: 1/4/1932; Parliamentary Areas revised: 1/4/1932 | 1933 |
| Warwickshire | Administrative Areas revised: 1/4/1932 | 1933 |
| Warwickshire | Administrative Areas revised: 1/12/1944; Parliamentary Areas revised: 1/12/1944 | 1946 |
| Warwickshire | Administrative Areas revised: 1/8/1945; Parliamentary Areas revised: 1/8/1945 | 1946 |
| Warwickshire | Administrative Areas revised: 1/8/1945 | 1946 |
| Warwickshire | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Warwickshire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Warwickshire | Administrative Areas revised: 1/4/1955 | 1949 |
| Warwickshire | Administrative Areas revised: 1/12/1956; Parliamentary Areas revised: 1955 | 1949 |
| Warwickshire | Administrative Areas revised: 1/8/1958 | 1949 |
| Warwickshire | Administrative Areas revised: 1/10/1960 | 1949 |
| Warwickshire | Administrative Areas revised: 1/10/1960; Parliamentary Areas revised: 1/10/1960 | 1949 |
| Warwickshire | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1949 |
| Warwickshire | Administrative Areas revised: 1/6/1962 | 1949 |
| Warwickshire | Administrative Areas revised: 1/7/1964 | 1949 |
| Warwickshire | Administrative Areas revised: 1/2/1964 | 1949 |
| Warwickshire | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1949 |
| Warwickshire | Administrative Areas revised: 1/4/1965 | 1949 |
| Warwickshire | Administrative Areas revised: 1/6/1967; Parliamentary Areas revised: 1/6/1967 | 1967 |
| Warwickshire | Administrative Areas revised: 1/6/1967; Judicial Areas revised: 1/6/1967 | 1967 |
| Warwickshire | Administrative Areas revised: 1/7/1970; Parliamentary Areas revised: 1/7/1970 | 1970 |
| Warwickshire | Administrative Areas revised: 1/7/1970; Judicial Areas revised: 1/7/1970 | 1970 |
| Warwickshire | Administrative Areas revised: 1/4/1972; Parliamentary Areas revised: 1/4/1972 | 1972 |
| Warwickshire | Administrative Areas revised: 1/4/1972; Judicial Areas revised: 1/4/1972 | 1972 |
| Westmorland | Administrative Areas revised: 3/3/1900 | 1900 |
| Westmorland | Administrative Areas revised: 1/12/1923; Parliamentary Areas revised: 1/12/1923 | 1924 |
| Westmorland | Administrative Areas revised: 30/1/1932 | 1932 |
| Westmorland | Administrative Areas revised: 1/11/1935; Parliamentary Areas revised: 1/11/1935 | 1936 |
| Westmorland | Administrative Areas revised: 1/11/1935 | 1936 |
| Westmorland | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Westmorland | Administrative Areas revised: 1/7/1946 | 1946 |
| Westmorland | Administrative Areas revised: ca. 1953; Parliamentary Areas revised: 1/1/1953 | 1949 |
| Westmorland | Administrative Areas revised: 1/6/1959 | 1949 |
| Westmorland | Administrative Areas revised: 1/6/1959; Parliamentary Areas revised: 1/5/1959 | 1949 |
| Westmorland | Administrative Areas revised: 1/8/1960; Parliamentary Areas revised: 1/8/1960 | 1949 |
| Westmorland | Administrative Areas revised: 1/8/1960 | 1949 |
| Westmorland | Administrative Areas revised: 1/4/1963 | 1949 |
| Westmorland | Administrative Areas revised: 1/4/1963; Parliamentary Areas revised: 1/4/1963 | 1949 |
| Westmorland | Administrative Areas revised: 1/11/1966 | 1949 |
| Westmorland | Administrative Areas revised: 1/11/1966; Parliamentary Areas revised: 1/11/1966 | 1949 |
| Westmorland | Administrative Areas revised: 1/4/1967; Parliamentary Areas revised: 1/4/1967 | 1967 |
| Westmorland | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Westmorland | Administrative Areas revised: 1/4/1968; Judicial Areas revised: 1/4/1968 | 1968 |
| Westmorland | Administrative Areas revised: 1/10/1971; Judicial Areas revised: 1/10/1971 | 1971 |
| Westmorland | Administrative Areas revised: 1/10/1971; Parliamentary Areas revised: 1/10/1971 | 1971 |
| Wiltshire | Administrative Areas revised: 6/9/1899 | 1900 |
| Wiltshire | Administrative Areas revised: 1/6/1921; Parliamentary Areas revised: 1/6/1921 | 1921 |
| Wiltshire | Administrative Areas revised: 1/10/1928; Parliamentary Areas revised: 1/10/1928 | 1928 |
| Wiltshire | Administrative Areas revised: 1/2/1930; Parliamentary Areas revised: 1/2/1930 | 1930 |
| Wiltshire | Administrative Areas revised: 20/6/1932 | 1933 |
| Wiltshire | Administrative Areas revised: 1/4/1935 | 1935 |
| Wiltshire | Administrative Areas revised: 1/4/1935; Parliamentary Areas revised: 1/4/1935 | 1935 |
| Wiltshire | Administrative Areas revised: 1/1/1945; Parliamentary Areas revised: 1/1/1945 | 1945 |
| Wiltshire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1947 |
| Wiltshire | Administrative Areas revised: 1/7/1946 | 1947 |
| Wiltshire | Administrative Areas revised: 1/11/1949 | ca. 1949 |
| Wiltshire | Administrative Areas revised: 1/1/1953; Parliamentary Areas revised: 1/1/1953 | 1949 |
| Wiltshire | Administrative Areas revised: 1/2/1956 | 1949 |
| Wiltshire | Administrative Areas revised: 1/2/1958; Parliamentary Areas revised: 1/2/1958 | 1949 |
| Wiltshire | Administrative Areas revised: 1/1/1959 | 1949 |
| Wiltshire | Administrative Areas revised: 1/12/1960; Parliamentary Areas revised: 1/12/1960 | 1949 |
| Wiltshire | Administrative Areas revised: 1/12/1960 | 1949 |
| Wiltshire | Administrative Areas revised: 1/6/1962 | 1949 |
| Wiltshire | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1949 |
| Wiltshire | Administrative Areas revised: 1/6/1964 | 1949 |
| Wiltshire | Administrative Areas revised: 1/6/1964; Parliamentary Areas revised: 1/6/1964 | 1949 |
| Wiltshire | Administrative Areas revised: 1/7/1966 | 1949 |
| Wiltshire | Administrative Areas revised: 1/7/1966; Parliamentary Areas revised: 1/7/1966 | 1949 |
| Wiltshire | Administrative Areas revised: 1/4/1967; Parliamentary Areas revised: 1/4/1967 | 1967 |
| Wiltshire | Administrative Areas revised: 1/4/1967; Judicial Areas revised: 1/4/1967 | 1967 |
| Wiltshire | Administrative Areas revised: 1/8/1970; Judicial Areas revised: 1/8/1970 | 1970 |
| Wiltshire | Administrative Areas revised: 1/8/1970; Parliamentary Areas revised: 1/8/1970 | 1970 |
| Wiltshire | Administrative Areas revised: 1/4/1972; Parliamentary Areas revised: 1/4/1972 | 1972 |
| Wiltshire | Administrative Areas revised: 1/4/1972; Judicial Areas revised: 1/4/1972 | 1972 |
| Worcestershire | Administrative Areas revised: 17/10/1899 | 1900 |
| Worcestershire | Administrative Areas revised: 1/3/1924; Parliamentary Areas revised: 1/3/1924 | 1924 |
| Worcestershire | Administrative Areas revised: 1/4/1928; Parliamentary Areas revised: 1/4/1928 | 1928 |
| Worcestershire | Administrative areas revised: 20/6/1932 | 1932 |
| Worcestershire | Administrative Areas revised: 1/4/1933 | 1934 |
| Worcestershire | Administrative Areas revised: 1/4/1933; Parliamentary Areas revised: 1/4/1933 | 1933 |
| Worcestershire | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | 1946 |
| Worcestershire | Administrative Areas revised: 1/7/1946 | 1946 |
| Worcestershire | Administrative Areas revised: 1/11/1949; Parliamentary Areas revised: 1948 | 1949 |
| Worcestershire | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1/1/1955 | 1949 |
| Worcestershire | Administrative Areas revised: 1/12/1956; Parliamentary Areas revised: 1/1/1955 | 1949 |
| Worcestershire | Administrative Areas revised: 1/1/1959 | 1949 |
| Worcestershire | Administrative Areas revised: 1/11/1961 | 1949 |
| Worcestershire | Administrative Areas revised: 1/11/1961; Parliamentary Areas revised: 1/11/1961 | 1949 |
| Worcestershire | Administrative Areas revised: 1/6/1962; Parliamentary Areas revised: 1/6/1962 | 1949 |
| Worcestershire | Administrative Areas revised: 1/6/1962 | 1949 |
| Worcestershire | Administrative Areas revised: 1/4/1963; Parliamentary Areas revised: 1/4/1963 | 1949 |
| Worcestershire | Administrative Areas revised: 1/4/1963 | 1949 |
| Worcestershire | Administrative Areas revised: 1/4/1965; Parliamentary Areas revised: 1/4/1965 | 1949 |
| Worcestershire | Administrative Areas revised: 1/4/1965 | 1949 |
| Worcestershire | Administrative Areas revised: 1/3/1967; Parliamentary Areas revised: 1/3/1967 | 1967 |
| Worcestershire | Administrative Areas revised: 1/3/1967; Judicial Areas revised: 1/3/1967 | 1967 |
| Worcestershire | Administrative Areas revised: 1/8/1969; Judicial Areas revised: 1/8/1969 | 1968 |
| Worcestershire | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Worcestershire | Administrative Areas revised: 1/8/1972; Parliamentary Areas revised: 1/8/1972 | 1972 |
| Yorkshire (East Riding) | Administrative Areas revised: 21/8/1899 | 1900 |
| Yorkshire (East Riding) | Administrative Areas revised: 15/9/1924; Parliamentary Areas revised: 15/9/1924 | 1924 |
| Yorkshire (East Riding) | Administrative Areas revised: 14/2/1927; Parliamentary Areas revised: 14/2/1927 | 1927 |
| Yorkshire (East Riding) | Administrative Areas revised: 25/1/1932 | 1932 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/5/1936; Parliamentary Areas revised: 1/5/1936 | 1936 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/5/1936 | 1936 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/4/1946; Parliamentary Areas revised: 1948 | ca. 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/4/1955; Parliamentary Areas revised: 1955 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/4/1958 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/1/1960; Parliamentary Areas revised: 1/1/1960 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/11/1961 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/11/1961; Parliamentary Areas revised: 1/11/1961 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/9/1964 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/9/1964; Parliamentary Areas revised: 1/9/1964 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/12/1966 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/12/1966; Parliamentary Areas revised: 1/12/1966 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1968 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/4/1968 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1949 |
| Yorkshire (East Riding) | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Yorkshire (North Riding) | Administrative Areas revised: 29/8/1899 | 1900 |
| Yorkshire (North Riding) | Administrative Areas revised: 15/5/1925; Parliamentary Areas revised: 15/5/1925 | 1925 |
| Yorkshire (North Riding) | Administrative Areas revised: 29/6/1928; Parliamentary Areas revised: 29/6/1928 | 1928 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/2/1930; Parliamentary Areas revised: 1/2/1930 | ca. 1930 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/4/1932 | ca. 1933 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/5/1936; Parliamentary Areas revised: 1/5/1936 | 1936 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/5/1936 | 1936 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/12/1949 | ca. 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/1/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: ca. 1954 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/6/1955; Parliamentary Areas revised: 1/6/1955 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/3/1958 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/11/1959 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/11/1959; Parliamentary Areas revised: 1/11/1959 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/5/1961 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/5/1961; Parliamentary Areas revised: 1/5/1961 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/4/1963 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/4/1963; Parliamentary Areas revised: 1/4/1963 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/6/1966 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/6/1966; Parliamentary Areas revised: 1/6/1966 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1969 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1969 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1968 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1968 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/4/1968 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/4/1968; Parliamentary Areas revised: 1/4/1968 | 1949 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/3/1971; Judicial Areas revised: 1/3/1971 | 1971 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/3/1971; Parliamentary Areas revised: 1/3/1971 | 1971 |
| Yorkshire (North Riding) | Administrative Areas revised: 1/2/1971; Parliamentary Areas revised: 1/2/1971 | 1971 |
| Yorkshire (West Riding) | Administrative Areas revised: 24/11/1899; Parliamentary Areas revised: 24/11/1899 | 1900 |
| Yorkshire (West Riding) | Administrative Areas revised: 28/2/1900 | 1900 |
| Yorkshire (West Riding) | Administrative Areas revised: 20/11/1923; Parliamentary Areas revised: 20/11/1923 | 1923 |
| Yorkshire (West Riding) | Administrative Areas revised: 20/11/1923 | 1923 |
| Yorkshire (West Riding) | Administrative Areas revised: 20/8/1927; Parliamentary Areas revised: 20/8/1927 | 1927 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1927; Parliamentary Areas revised: 1/4/1927 | 1927 |
| Yorkshire (West Riding) | Administrative Areas revised: 31/7/1930 | 1930 |
| Yorkshire (West Riding) | Administrative Areas revised: 31/7/1930 | 1930 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/8/1939; Parliamentary Areas revised: 1/8/1939 | 1939 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/8/1939 | 1939 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/9/1943; Parliamentary Areas revised: 1/9/1943 | ca. 1943 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/6/1943; Parliamentary Areas revised: 1/6/1943 | ca. 1944 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1946 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/7/1946 | ca. 1946 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/7/1946; Parliamentary Areas revised: 1918 | ca. 1947 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/7/1946 | ca. 1947 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1949 | ca. 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1949; Parliamentary Areas revised: 1918 | ca. 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1949 | ca. 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1949; Parliamentary Areas revised: ca. 1948 | ca. 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1949; Parliamentary Areas revised: 1948 | ca. 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/6/1954 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/2/1955; Parliamentary Areas revised: 1/2/1955 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/6/1954; Parliamentary Areas revised: ca. 1955 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1956; Parliamentary Areas revised: ca. 1955 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/10/1957 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1957 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/1/1958; Parliamentary Areas revised: 1/1/1958 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1959 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1959; Parliamentary Areas revised: 1/12/1959 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/5/1959 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1960 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/12/1960; Parliamentary Areas revised: 1/12/1960 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/6/1960 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/6/1960; Parliamentary Areas revised: 1/6/1960 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/3/1962; Parliamentary Areas revised: 1/3/1962 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/3/1962 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/2/1963; Parliamentary Areas revised: 1/2/1963 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/2/1963 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/3/1964 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/3/1964; Parliamentary Areas revised: 1/3/1964 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/5/1967; Parliamentary Areas revised: 1/5/1967 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/5/1967 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/5/1967 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/10/1968; Parliamentary Areas revised: 1/10/1968 | 1969 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/10/1968; Judicial Areas revised: 1/10/1968 | 1969 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1969; Judicial Areas revised: 1/4/1969 | 1969 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1969; Parliamentary Areas revised: 1/4/1969 | 1969 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/5/1967; Parliamentary Areas revised: 1/4/1969 | 1949 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |
| Yorkshire (West Riding) | Administrative Areas revised: 1/4/1971; Parliamentary Areas revised: 1/4/1971 | 1971 |