The KT postcode area, also known as the Kingston upon Thames postcode area, is a group of 24 postcode districts in England, within 19 post towns. These cover boroughs in south-west Greater London and several boroughs in north-east Surrey.
The EN postcode area, also known as the Enfield postcode area, is a group of eleven postcode districts in England, within seven post towns. These cover parts of northern Greater London, southern Hertfordshire and western Essex.
The CM postcode area, also known as the Chelmsford postcode area, is a group of 25 postcode districts in England, within 16 post towns. These cover central Essex, plus a small part of east Hertfordshire and a very small part of the London Borough of Havering.
The HA postcode area, also known as the Harrow postcode area, is a group of ten postcode districts in England, within seven post towns. These cover part of northwest London, plus a very small part of south Hertfordshire.
The WD postcode area, also known as the Watford postcode area, is a group of eleven postcode districts in south-east England, within seven post towns. These cover south-west Hertfordshire, plus very small parts of Buckinghamshire and Greater London.
The DY postcode area, also known as the Dudley postcode area, is a group of fourteen postcode districts in England, within eight post towns. These cover the south-western part of the West Midlands and north Worcestershire, plus the south-westernmost part of Staffordshire and a small part of south-east Shropshire.
The HP postcode area, also known as the Hemel Hempstead postcode area, is a group of twenty-four postcode districts in England, within eleven post towns. These cover north-west Hertfordshire and central Buckinghamshire.
The LU postcode area, also known as the Luton postcode area, is a group of seven postcode districts in England, within three post towns. These cover south Bedfordshire, plus small parts of north Hertfordshire and east Buckinghamshire.
The SG postcode area, also known as the Stevenage postcode area, is a group of nineteen postcode districts in England, within fifteen post towns. These cover north Hertfordshire and east Bedfordshire, plus a small part of south-west Cambridgeshire and a very small part of Essex.
The RG postcode area, also known as the Reading postcode area, is a group of thirty postcode districts in England, within twelve post towns. These cover west and central Berkshire and north Hampshire, plus a small part of south-east Oxfordshire and very small parts of Buckinghamshire and Wiltshire.
The WA postcode area, also known as the Warrington postcode area, is a group of sixteen postcode districts in North West England, within nine post towns. These cover north Cheshire, eastern Merseyside and small parts of south-western Greater Manchester.
The WN postcode area, also known as the Wigan postcode area, is a group of eight postcode districts in North West England, within three post towns. These cover most of the Metropolitan Borough of Wigan in Greater Manchester, plus small parts of West Lancashire and the Metropolitan Borough of St Helens in Merseyside.
The HG postcode area, also known as the Harrogate postcode area, is a group of five postcode districts in England, within three post towns. These postcode districts cover Harrogate, Ripon and Knaresborough in North Yorkshire.
The CA postcode area, also known as the Carlisle postcode area, is a group of 28 postcode districts in north-west England, within 22 post towns. These cover northern Cumbria, including Carlisle, Penrith, Workington, Whitehaven, Maryport, Cockermouth, Egremont, Alston, Appleby-in-Westmorland, Beckermet, Brampton, Cleator, Cleator Moor, Frizington, Holmrook, Keswick, Kirkby Stephen, Moor Row, Ravenglass, Seascale, St Bees and Wigton, plus a very small part of Northumberland.
The EX postcode area, also known as the Exeter postcode area, is a group of 33 postcode districts in South West England, within 30 post towns. These cover north and east Devon, plus the northernmost part of Cornwall and very small parts of Somerset and Dorset.
The WV postcode area, also known as the Wolverhampton postcode area, is a group of sixteen postcode districts in England, within four post towns. These cover Wolverhampton, Willenhall and Bilston in the West Midlands, plus parts of south-west Staffordshire and south-east Shropshire.
The ST postcode area, also known as the Stoke-on-Trent postcode area, is a group of 21 postcode districts in England, within six post towns. These cover much of north and central Staffordshire, plus very small parts of Cheshire and Derbyshire.
The BB postcode area, also known as the Blackburn postcode area, is a group of thirteen postcode districts in north-west England, within nine post towns. These cover east Lancashire, including Blackburn, Burnley, Accrington, Barnoldswick, Clitheroe, Colne, Darwen, Nelson and Rossendale.
The FY postcode area, also known as the Blackpool postcode area, is a group of eight postcode districts in Lancashire, North West England. The districts cover the entire borough of Blackpool and the western parts of the boroughs of Wyre and Fylde. The letters in the postcode area name refer to the Fylde coastal plain. Its five post towns are Blackpool, Fleetwood, Lytham St Annes, Poulton-le-Fylde, Thornton-Cleveleys.
The SL postcode area, also known as the Slough postcode area, is a group of ten postcode districts in South East England, within eight post towns. These cover east Berkshire and south Buckinghamshire, plus a very small part of south-west Hertfordshire.
