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 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 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 CB postcode area, also known as the Cambridge postcode area, is a group of sixteen postcode districts in the east of England, within five post towns. These cover much of south and east Cambridgeshire, plus parts of west Suffolk and north-west Essex and a very small part of Norfolk.
The GU postcode area, also known as the Guildford postcode area, is a group of 38 postcode districts in South East England, within 24 post towns. These cover west Surrey, north-east Hampshire, northwestern West Sussex and a small part of south-east Berkshire.
The BN postcode area, also known as the Brighton postcode area, is a group of 30 postcode districts in South East England, within 18 post towns. These cover southwestern East Sussex and southeastern West Sussex. The main sorting office is at the Gatwick Mail Centre in Crawley.
The DE postcode area, also known as the Derby postcode area, is a group of 23 postcode districts in central England, within 11 post towns. These cover south and central Derbyshire, parts of east Staffordshire and north-west Leicestershire, and very small parts of Nottinghamshire.
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 NG postcode area, also known as the Nottingham postcode area, is a group of 29 postcode districts in the East Midlands of England, within seven post towns. These cover southern and central Nottinghamshire, parts of south-west Lincolnshire and small parts of Derbyshire and Leicestershire. The NG postcode area is one of six with a population above 1 million.
The PE postcode area, also known as the Peterborough postcode area, is a group of 38 postcode districts in eastern England, which are subdivisions of 18 post towns. These cover most of Cambridgeshire, much of south Lincolnshire and west Norfolk, plus parts of east Northamptonshire and very small parts of Bedfordshire and Rutland.
The SK postcode area, also known as the Stockport postcode area, is a group of nineteen postcode districts in England, within eleven post towns. These cover south-east Greater Manchester, parts of east Cheshire, north-west Derbyshire and a small part of north Staffordshire.
The DH postcode area, also known as the Durham postcode area, is a group of nine postcode districts in north-east England, within five post towns. These cover northern County Durham, parts of southern Tyne and Wear and a small part of southern Northumberland.
The LD postcode area, also known as the Llandrindod Wells postcode area, is a group of eight postcode districts in Wales. These postcode districts cover much of south Powys, including Llandrindod Wells, Brecon, Builth Wells, Presteigne, Knighton, Rhayader, Llanwrtyd Wells and Llangammarch Wells. The LD6 district also covers one isolated farmhouse in Ceredigion. The LD7 and LD8 districts extend across the border into England, covering very small parts of Shropshire and Herefordshire.
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 PO postcode area, also known as the Portsmouth postcode area, is a group of 34 postcode districts in southern England, within 24 post towns. These cover south-east Hampshire, southwestern West Sussex and the Isle of Wight.
The DD postcode area, also known as the Dundee postcode area, is a group of eleven postcode districts in eastern Scotland, within nine post towns. These cover Dundee and Angus, plus part of north-east Fife and small parts of Perth and Kinross and Aberdeenshire.
The TN postcode area, also known as the Tunbridge Wells postcode area, is a group of 40 postcode districts in England, within 24 post towns. These cover south and west Kent and northern and eastern East Sussex, plus very small parts of Surrey and the London Borough of Bromley.
