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This is a list of postcode areas, used by Royal Mail for the purposes of directing mail within the United Kingdom. The postcode area is the largest geographical unit used and forms the initial characters of the alphanumeric UK postcode. [1]
For the purposes of directing mail, the United Kingdom (although the populations listed just show figures for England, Wales and Northern Ireland), is divided by Royal Mail into postcode areas. The postcode area is the largest geographical unit used and forms the initial characters of the alphanumeric UK postcode. [1]
A group of postcode districts with the same alphabetical prefix is called a postcode area. All, or part, of one or more postcode districts are grouped into post towns. [1] Until 1996, Royal Mail required counties to be included in addresses, except for 110 of the larger post towns.
The full delivery address including postcode can be validated against the Royal Mail Postcode Address File (PAF), which lists 29 million valid delivery addresses, [27] constituting most (but not all) addresses in the UK. [28] A regular expression for validating UK postcodes is specified in the British Standards document BS 7666. [29]
English: Labelled map of Royal Mail postcode areas of the United Kingdom and Crown Dependencies with insets for Manchester and London conurbations. Equirectangular projection with latitude stretching 170%, WGS84 datum.
Royal Mail (1999). Address Management Guide (6th ed.). "Royal Mail major recode historical information – 2000 to September 2011" (PDF). Royal Mail. 3 November 2011. Archived from the original (PDF) on 26 September 2017
English: Labelled map of Royal Mail postcode districts of the PO postcode area. Indicative postcode districts shown in red, post towns shown in grey. Equirectangular projection with latitude stretching 160%, WGS84 datum. Geographic limits: Main 1:272,000 map: West: 1.593W; East: 0.569W; North: 51.001N; South: 50.553N
English: Labelled map of Royal Mail postcode districts of the UB postcode area. Indicative postcode districts shown in red, post towns shown in grey. Equirectangular projection with latitude stretching 160%, WGS84 datum. Geographic limits: Main 1:67,000 map: West: 0.546W; East: 0.29W; North: 51.63N; South: 51.47N