| Code Prefix |
Postal Town |
County (clue) |
|---|---|---|
| AB | Aberdeen | (Aberdeenshire) |
| AL | St. Albans | (Hertfordshire) |
| B | Birmingham | (West Midlands) |
| BA | Bath | (Avon) |
| BB | Blackburn | (Lancashire) |
| BD | Bradford | (West Yorkshire) |
| BH | Bournemouth | (Dorset) |
| BL | Bolton | (Lancashire) |
| BN | Brighton | (East Sussex) |
| BR | Bromley | (Kent) |
| BS | Bristol | (Avon) |
| BT | Belfast | (County Antrim) |
| CA | Carlisle | (Cumbria) |
| CB | Cambridge | (Cambridgeshire) |
| CF | Cardiff | (South Glamorgan) |
| CH | Chester | (Cheshire) |
| CM | Chelmsford | (Essex) |
| CO | Colchester | (Essex) |
| CR | Croydon | (Surrey) |
| CT | Canterbury | (Kent) |
| CV | Coventry | (West Midlands) |
| CW | Crewe | (Cheshire) |
| DA | Dartford | (Kent) |
| DD | Dundee | (Angus) |
| DE | Derby | (Derbyshire) |
| DG | Dumfries | (Dumfriesshire) |
| DH | Durham | (County Durham) |
| DL | Darlington | (County Durham) |
| DN | Doncaster | (South Yorkshire) |
| DT | Dorchester | (Dorset) |
| DY | Dudley | (West Midlands) |
| E | London | (London) |
| EC | London | (London) |
| EH | Edinburgh | (Midlothian) |
| EN | Enfield | (Middlesex) |
| EX | Exeter | (Devon) |
| FK | Falkirk | (Stirlingshire) |
| FY | Fleetwood | Lancashire |
| G | Glasgow | (Lanarkshire) |
| GL | Gloucester | (Gloucestershire) |
| GU | Guildford | (Surrey) |
| GY | Guernsey | (Channel Isles) |
| HA | Harrow | (Middlesex) |
| HD | Huddersfield | (West Yorkshire) |
| HG | Harrogate | (North Yorkshire) |
| HR | Hereford | (Herefordshire) |
| HU | Hull | (North Humberside) |
| HX | Halifax | (West Yorkshire) |
| IM | Isle Of Man | (Isle of Man) |
| IP | Ipswich | (Suffolk) |
| IV | Inverness | (Inverness-shire) |
| JE | Jersey | (Channel Isles) |
| KA | Ayr | (Ayrshire) |
| KT | Kingston Upon Thames | (Surrey) |
| KW | Kirkwall | (Orkney) |
| KY | Kinross | (Kinross-shire) |
| L | Liverpool | (Merseyside) |
| LA | Lancaster | (Lancashire) |
| LE | Leicester | (Leicestershire) |
| LL | Llandudno | (Gwynedd) |
| LN | Lincoln | (Lincolnshire) |
| LS | Leeds | (West Yorkshire) |
| LU | Luton | (Bedfordshire) |
| M | Manchester | (Lancashire) |
| ME | Maidstone | (Kent) |
| MK | Milton Keynes | (Buckinghamshire) |
| ML | Motherwell | Lanarkshire |
| N | London | (London) |
| NE | Newcastle Upon Tyne | (Tyne and Wear) |
| NG | Nottingham | (Nottinghamshire) |
| NN | Northampton | (Northamptonshire) |
| NP | Newport | (Gwent) |
| NR | Norwich | (Norfolk) |
| NW | London | (London) |
| OL | Oldham | (Lancashire) |
| OX | Oxford | (Oxfordshire) |
| PE | Peterborough | (Cambridgeshire) |
| PH | Perth | (Perthshire) |
| PL | Plymouth | (Devon) |
| PO | Portsmouth | (Hampshire) |
| PR | Preston | (Lancashire) |
| RG | Reading | (Berkshire) |
| RH | Redhill | (Surrey) |
| RH | Reigate | Surrey |
| RM | Romford | (Essex) |
| S | Sheffield | (South Yorkshire) |
| SA | Swansea | (West Glamorgan) |
| SE | London | (London) |
| SK | Stockport | (Cheshire) |
| SL | Slough | (Berkshire) |
| SN | Swindon | (Wiltshire) |
| SO | Southampton | (Hampshire) |
| SP | Salisbury | (Wiltshire) |
| SR | Sunderland | (Tyne and Wear) |
| SS | Southend-On-Sea | (Essex) |
| ST | Stoke-On-Trent | (Staffordshire) |
| ST | Stafford | (Staffordshire) |
| ST | Stone | (Staffordshire) |
| SW | London | (London) |
| SY | Shrewsbury | (Shropshire) |
| TA | Taunton | (Somerset) |
| TD | Berwick-Upon-Tweed | (Northumberland) |
| TD | Selkirk | (Selkirkshire) |
| TF | Telford | (Shropshire) |
| TN | Tunbridge Wells | (Kent) |
| TQ | Torquay | (Devon) |
| TR | Truro | (Cornwall) |
| TW | Twickenham | (Middlesex) |
| UB | Uxbridge | (Middlesex) |
| W | London | (London) |
| WA | Warrington | (Cheshire) |
| WC | London | (London) |
| WD | Watford | (Hertfordshire) |
| WF | Wakefield | (West Yorkshire) |
| WN | Wigan | (Lancashire) |
| WR | Worcester | (Worcestershire) |
| WS | Walsall | (West Midlands) |
| WV | Wolverhampton | (West Midlands) |
| YO | York | (North Yorkshire) |
| ZE | Shetland | (Shetland Islands) |