From Wikipedia, the free encyclopedia.
Traditionally a postal address requires a county to be listed, although since 1996 the Royal Mail has indicated that it no longer formally requires this and will accept both the traditional and administrative counties. However from an organisational point of view they still follow these counties, whilst many individuals and organisations still list the county in their address, whilst a lot of forms include a section for county. The postal counties broadly follow the traditional counties but there are many places where there are differences, such as Denham which is in both the traditional and administrative county of Buckinghamshire but postally is in Middlesex. The London postal district is especially confusing because it does not conform to the boundaries of either the London County Council or the Greater London Council/Greater London Authority whilst other parts of the Greater London administrative area are in the postal counties of variously Surrey, Kent, Essex and Middlesex.
