The code was constructed top down from a four character code representing a unitary authority or two-tier county and district.
Local government wards had a two-letter code within their local authority, and census output area an additional four digits within a ward.
The authority and ward codes were recognised by Eurostat as local administrative unit code levels 1 and 2 within the NUTS system.
An overlapping system encoded civil parish areas. Parishes were represented by an additional three digits within their local authority:
The codes for counties and districts were as follows.1
Also showing NUTS(3) codes thus: (UKH12)
These codes became active following local government changes in 1986.
These codes became active following local government changes the 1990s.
These codes became active following local government changes in 2009.
These codes became active following local government changes in 1996.
"District Names and Codes for England and Wales as at 31/12/1994". statistics.gov.uk. Archived from the original on 4 June 2011. Retrieved 4 November 2023. https://web.archive.org/web/20110604135516/http://www.statistics.gov.uk/geography/downloads/02_11_01_District_names_and_codes_E_W_12_94.xls ↩