The RM postcode area, also known as the Romford postcode area, is a group of twenty postcode districts in south-east England, within nine post towns. These cover parts of eastern Greater London and south-west Essex. Inward mail for the area is sorted, along with mail for the E and IG postcode areas, at the Romford Mail Centre.
The IG postcode area, also known as the Ilford postcode area, is a group of eleven postcode districts in England, within six post towns. These cover parts of eastern Greater London and south-west Essex.
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 CR postcode area, also known as the Croydon postcode area, is a group of eight postcode districts in England, within ten post towns. These cover parts of southern Greater London and north-east Surrey.
The SM postcode area, also known as the Sutton postcode area, is a group of seven postcode districts in England, within five post towns. These cover part of south-west London, as well as a small part of north 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 BR postcode area, also known as the Bromley postcode area, is a group of eight postcode districts in England, within seven post towns. These cover part of south-eastern Greater London, as well as a small part of north-west Kent.
The TW postcode area, also known as the Twickenham postcode area, is a group of twenty postcode districts in south-east England, within thirteen post towns. These cover parts of south-west London and north-west Surrey, plus a very small part of Berkshire.
The DA postcode area, also known as the Dartford postcode area, is a group of eighteen postcode districts in England, within eleven post towns. These cover parts of south-east London and north-west Kent.
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 CV postcode area, also known as the Coventry postcode area, is a group of 24 postcode districts in central England, within eleven post towns. These cover the eastern part of the West Midlands county, most of Warwickshire, a part of west Leicestershire and a very small part of Northamptonshire.
The UB postcode area, also known as the Southall postcode area, is a group of eleven postcode districts in England, within six post towns. These cover parts of western and north-western Greater London, plus a very small part of Buckinghamshire. The letters in the postcodes are the phonemic abbreviation of Uxbridge.
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 ME postcode area, also known as the Rochester postcode area, is a group of 20 postcode districts in South East England, within 11 post towns. These cover north central Kent, including the Medway unitary authority and the borough of Swale, plus parts of the boroughs of Maidstone, Tonbridge and Malling, and Gravesham. The letters in the postcode are derived from the name of the Medway conurbation.
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 HD postcode area, also known as the Huddersfield postcode area, is a group of nine postcode districts in England, within three post towns. These cover southern West Yorkshire, including Huddersfield and Holmfirth in the Metropolitan Borough of Kirklees, and Brighouse in the Metropolitan Borough of Calderdale.
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 SY postcode area, also known as the Shrewsbury postcode area, is a group of 25 postcode districts in the West Midlands and Mid Wales, with small areas in North West England and North Wales. Together the districts cover most of Shropshire, north Powys, north Ceredigion, and part of south Cheshire. In addition, the SY7 and SY8 districts cover a small part of north Herefordshire, and the SY14 and SY20 districts also contain very small parts of Gwynedd and Wrexham County Borough respectively. The postcode area contains 32 post towns.
The HX postcode area, also known as the Halifax postcode area, is a group of seven postcode districts in England, within four post towns. These cover most of the Metropolitan Borough of Calderdale in western West Yorkshire, including Halifax, Elland, Sowerby Bridge and Hebden Bridge.
