Ordnance Survey Maps - 25 inch England and Wales, 1841-1952

County List

View a Summary List of English and Welsh counties, with their changes of meridian, and dates of survey and publication. Changes of meridian caused the sheet lines to change too.

Anglesey, 1886-1923 Bedfordshire, 1876-1943 Berkshire, 1866-1943 Brecknockshire, 1874-1927 Buckinghamshire, 1867-1943 Caernarvonshire, 1885-1943 Cambridgeshire, 1876-1943 Cardiganshire, 1885-1943 Carmarthenshire, 1875-1943 Cheshire, 1870-1951 Cornwall and Isles of Scilly, 1859-1943 Cumberland, 1859-1943 Denbighshire, 1870-1943 Derbyshire, 1875-1943 Devonshire, 1855-1943 Dorset, 1860-1943 Durham, 1854-1939 Essex, 1862-1896 Essex, 1912-1940 Flintshire, 1869-1911

Glamorgan, 1867-1943 Gloucestershire, 1873-1943 Hampshire & Isle of Wight, 1862-1933 Herefordshire, 1878-1943 Hertfordshire, 1865-1940 Huntingdonshire, 1884-1925 Isle of Man, 1867-69 Kent, 1858-1940 Lancashire, 1842-1943 Leicestershire, 1879-1943 Lincolnshire, 1883-1943 London, 1862-1961 Merionethshire, 1873-1914 Middlesex, 1862-1943 Monmouthshire, 1875-1943 Montgomeryshire, 1874-1901 Norfolk, 1879-1943 Northamptonshire, 1882-1943 Northumberland, 1855-1897

Northumberland, 1912-1943 Nottinghamshire, 1875-1943 Oxfordshire, 1872-1939 Pembrokeshire, 1860-1943 Radnorshire, 1883-1927 Rutland, 1883-1928 Shropshire, 1873-1943 Somerset, 1882-1943 Staffordshire, 1861-1943 Suffolk, 1861-1926 Surrey, 1861-1943 Sussex, 1869-1910 Warwickshire, 1881-1939 Westmorland, 1856-1943 Wiltshire, 1873-1943 Worcestershire, 1881-1938 Yorkshire, 1848-1943