# List of postcode districts in the United Kingdom

This is a list of postcode districts in the United Kingdom and Crown Dependencies. 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.
Until 1996, Royal Mail required counties to be included in addresses, except for 110 of the larger post towns. For these "special post towns", the former postal county is shown in brackets below. Since 1996, counties are not required for any address.
Postcode district codes are also known as "outward codes".

## List

Postcodes and their namesakes :
| Postcode | Namesake |
| AB | Aberdeen |
| AL | St Albans |
| B | Birmingham |
| BA | Bath |
| BB | Blackburn |
| BD | Bradford |
| BH | Bournemouth |
| BL | Bolton |
| BN | Brighton |
| BR | Bromley |
| BS | Bristol |
| BT | Belfast |
| CA | Carlisle |
| CB | Cambridge |
| CF | Cardiff |
| CH | Chester |
| CM | Chelmsford |
| CO | Colchester |
| CR | Croydon |
| CT | Canterbury |
| CV | Coventry |
| CW | Crewe |
| DA | Dartford |
| DD | Dundee |
| DE | Derby |
| DG | Dumfries and Galloway |
| DH | Durham |
| DL | Darlington |
| DN | Doncaster |
| DT | Dorchester |
| DY | Dudley |
| E | East London |
| EC | East Central London |
| EH | Edinburgh |
| EX | Exeter |
| FK | Falkirk |
| FY | Fylde |
| G | Glasgow |
| GL | Gloucester |
| GU | Guildford |
| GY | Guernsey |
| HA | Harrow |
| HD | Huddersfield |
| HG | Harrogate |
| HP | Hemel Hempstead |
| HR | Hereford |
| HS | Outer Hebrides |
| HU | Hull |
| HX | Halifax |
| IG | Ilford and Chigwell |
| IM | Isle of Man |
| IP | Ipswich |
| IV | Inverness |
| JE | Jersey |
| KA | Kilmarnock |
| KT | Kingston upon Thames |
| KW | Kirkwall |
| KY | Kirkcaldy |
| L | Liverpool |
| LA | Lancaster |
| LD | Llandrindod Wells |
| LE | Leicester |
| LL | Llandudno |
| LN | Lincoln |
| LS | Leeds |
| M | Manchester |
| ME | Medway |
| MK | Milton Keynes |
| ML | Motherwell |
| N | North London |
| NE | Newcastle |
| NG | Nottingham |
| NN | Northampton |
| NP | Newport |
| NR | Norwich |
| NW | North West London |
| OL | Oldham |
| OX | Oxford |
| PA | Paisley |
| PE | Peterborough |
| PH | Perth |
| PL | Plymouth |
| PO | Portsmouth |
| PR | Preston |
| RG | Reading |
| RH | Redhill |
| RM | Romford |
| S | Sheffield |
| SA | Swansea |
| SE | South East London |
| SG | Stevenage |
| SK | Stockport |
| SL | Slough |
| SN | Swindon |
| SO | Southampton |
| SP | Salisbury Plain |
| SR | Sunderland |
| SS | Southend-on-Sea |
| ST | Stoke-on-Trent |
| SW | South West London |
| SY | Shrewsbury |
| TA | Taunton |
| TD | Tweeddale |
| TF | Telford |
| TN | Tunbridge Wells |
| TQ | Torquay |
| TR | Truro |
| TS | Tees |
| TW | Twickenham |
| UB | Uxbridge |
| W | West London |
| WA | Warrington |
| WC | West Central London |
| WD | Watford |
| WF | Wakefield |
| WN | Wigan |
| WS | Walsall |
| WV | Wolverhampton |
| YO | York |
| ZE | Shetland Islands |
| (GX) | (Gibraltar) |
| Postcode area | Postcode districts | Post town | Former postal county |
| AB | AB10, AB11, AB12, AB15, AB16, AB21, AB22, AB23, AB24, AB25, AB99 | Aberdeen | (Aberdeenshire) |
| AB | AB13 | Milltimber | Aberdeenshire |
| AB | AB14 | Peterculter | Aberdeenshire |
| AB | AB30 | Laurencekirk | Kincardineshire |
| AB | AB31 | Banchory | Kincardineshire |
| AB | AB32 | WESTHILL | Aberdeenshire |
| AB | AB33 | ALFORD | Aberdeenshire |
| AB | AB34 | Aboyne | (Aberdeenshire) |
| AB | AB35 | Ballater | Aberdeenshire |
| AB | AB36 | Strathdon | (Aberdeenshire) |
| AB | AB37 | Ballindalloch | Banffshire |
| AB | AB38 | Aberlour | Banffshire |
| AB | AB39 | Stonehaven | Kincardineshire |
| AB | AB41 | ELLON | Aberdeenshire |
| AB | AB42 | Peterhead | Aberdeenshire |
| AB | AB43 | Fraserburgh | Aberdeenshire |
| AB | AB44 | MACDUFF | Banffshire |
| AB | AB45 | BANFF | (Banffshire) |
| AB | AB51 | Inverurie | Aberdeenshire |
| AB | AB52 | Insch | Aberdeenshire |
| AB | AB53 | Turriff | Aberdeenshire |
| AB | AB54 | Huntly | Aberdeenshire |
| AB | AB55 | KEITH | Banffshire |
| AB | AB56 | Buckie | Banffshire |
| AL | AL01 AL1, AL2, AL3, AL4 | ST. ALBANS | Hertfordshire |
| AL | AL05 AL5 | Harpenden | Hertfordshire |
| AL | AL06 AL6, AL7 | Welwyn | Hertfordshire |
| AL | AL07 AL7, AL8 | Welwyn Garden City | Hertfordshire |
| AL | AL09 AL9, AL10 | HATFIELD | Hertfordshire |
| B | B001 B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12, B13, B14, B15, B16, B17, B18, B19, B20, B21, B23, B24, B25, B26, B27, B28, B29, B30, B31, B32, B33, B34, B35, B36, B37, B38, B40, B42, B43, B44, B45, B46, B47, B48, B99 | Birmingham | (West Midlands) |
| B | B049 B49, B50 | Alcester | Warwickshire |
| B | B060 B60, B61 | Bromsgrove | Worcestershire |
| B | B062 B62, B63 | Halesowen | West Midlands |
| B | B064 B64 | Cradley Heath | West Midlands |
| B | B065 B65 | Rowley Regis | West Midlands |
| B | B066 B66, B67 | Smethwick | West Midlands |
| B | B068 B68, B69 | OLDBURY | West Midlands |
| B | B070 B70, B71 | West Bromwich | West Midlands |
| B | B072 B72, B73, B74, B75, B76 | Sutton Coldfield | West Midlands |
| B | B077 B77, B78, B79 | TAMWORTH | Staffordshire |
| B | B080 B80 | STUDLEY | Warwickshire |
| B | B090 B90, B91, B92, B93, B94 | Solihull | West Midlands |
| B | B095 B95 | Henley-in-Arden | Warwickshire |
| B | B096 B96, B97, B98 | Redditch | Worcestershire |
| BA | BA01 BA1, BA2 | BATH | (Avon) |
| BA | BA03 BA3 | Radstock | Avon |
| BA | BA04 BA4 | Shepton Mallet | Somerset |
| BA | BA05 BA5 | WELLS | Somerset |
| BA | BA06 BA6 | Glastonbury | Somerset |
| BA | BA07 BA7 | Castle Cary | Somerset |
| BA | BA08 BA8 | Templecombe | Somerset |
| BA | BA09 BA9 | Wincanton | Somerset |
| BA | BA09 BA9, BA10 | Bruton | Somerset |
| BA | BA11 | Frome | Somerset |
| BA | BA12 | Warminster | Wiltshire |
| BA | BA13 | WESTBURY | Wiltshire |
| BA | BA14 | Trowbridge | Wiltshire |
| BA | BA15 | BRADFORD-ON-AVON | Wiltshire |
| BA | BA16 | STREET | Somerset |
| BA | BA20, BA21, BA22 | Yeovil | Somerset |
| BB | BB01 BB1, BB2, BB6 | Blackburn | (Lancashire) |
| BB | BB03 BB3 | Darwen | Lancashire |
| BB | BB04 BB4 | Rossendale | Lancashire |
| BB | BB05 BB5 | Accrington | Lancashire |
| BB | BB07 BB7 | Clitheroe | Lancashire |
| BB | BB08 BB8 | Colne | Lancashire |
| BB | BB09 BB9 | NELSON | Lancashire |
| BB | BB10, BB11, BB12 | Burnley | Lancashire |
| BB | BB18, BB94 | Barnoldswick | Lancashire |
| BD | BD01 BD1, BD2, BD3, BD4, BD5, BD6, BD7, BD8, BD9, BD10, BD11, BD12, BD13, BD14, BD15, BD98, BD99 | Bradford | West Yorkshire |
| BD | BD16, BD97 | Bingley | West Yorkshire |
| BD | BD17, BD18, BD98 | SHIPLEY | West Yorkshire |
| BD | BD19 | Cleckheaton | West Yorkshire |
| BD | BD20, BD21, BD22 | Keighley | West Yorkshire |
| BD | BD23, BD24 | Skipton | North Yorkshire |
| BD | BD24 | SETTLE | North Yorkshire |
| BF | BF01 BF1 | BFPO | ZZZZ non-geographic |
| BH | BH01 BH1, BH2, BH3, BH4, BH5, BH6, BH7, BH8, BH9, BH10, BH11 | Bournemouth | (Dorset) |
| BH | BH12, BH13, BH14, BH15, BH16, BH17 | Poole | Dorset |
| BH | BH18 | BROADSTONE | Dorset |
| BH | BH19 | Swanage | Dorset |
| BH | BH20 | WAREHAM | Dorset |
| BH | BH21 | WIMBORNE | Dorset |
| BH | BH22 | Ferndown | Dorset |
| BH | BH23 | CHRISTCHURCH | Dorset |
| BH | BH24 | Ringwood | Hampshire |
| BH | BH25 | New Milton | Hampshire |
| BH | BH31 | Verwood | Dorset |
| BL | BL00 BL0, BL8, BL9 | Bury | Lancashire |
| BL | BL01 BL1, BL2, BL3, BL4, BL5, BL6, BL7, BL11, BL78 | Bolton | (Lancashire) |
| BN | BN01 BN1, BN2, BN41, BN42, BN45, BN50, BN51, BN88 | Brighton | (East Sussex) |
| BN | BN03 BN3, BN52 | Hove | East Sussex |
| BN | BN05 BN5 | Henfield | West Sussex |
| BN | BN06 BN6 | Hassocks | West Sussex |
| BN | BN07 BN7, BN8 | Lewes | East Sussex |
| BN | BN09 BN9 | NEWHAVEN | East Sussex |
| BN | BN10 | Peacehaven | East Sussex |
| BN | BN11, BN12, BN13, BN14, BN91, BN99 | Worthing | West Sussex |
| BN | BN15, BN99 | LANCING | West Sussex |
| BN | BN16, BN17 | Littlehampton | West Sussex |
| BN | BN18 | Arundel | West Sussex |
| BN | BN20, BN21, BN22, BN23 | Eastbourne | East Sussex |
| BN | BN24 | Pevensey | East Sussex |
| BN | BN25 | SEAFORD | East Sussex |
| BN | BN26 | Polegate | East Sussex |
| BN | BN27 | Hailsham | East Sussex |
| BN | BN43 | Shoreham-by-Sea | West Sussex |
| BN | BN44 | Steyning | West Sussex |
| BR | BR01 BR1, BR2 | Bromley | (Kent) |
| BR | BR02 BR2 | Keston | Kent |
| BR | BR03 BR3 | Beckenham | Kent |
| BR | BR04 BR4 | West Wickham | Kent |
| BR | BR05 BR5, BR6 | Orpington | Kent |
| BR | BR07 BR7 | Chislehurst | Kent |
| BR | BR08 BR8 | Swanley | Kent |
| BS | BS00 BS0, BS1, BS2, BS3, BS4, BS5, BS6, BS7, BS8, BS9, BS10, BS11, BS13, BS14, BS15, BS16, BS20, BS30, BS31, BS32, BS34, BS35, BS36, BS37, BS39, BS40, BS41, BS48, BS49, BS80, BS98, BS99 | Bristol | (Avon) |
| BS | BS21 | Clevedon | Avon |
| BS | BS22, BS23, BS24 | Weston-super-Mare | Avon |
| BS | BS25 | Winscombe | Avon |
| BS | BS26 | Axbridge | Somerset |
| BS | BS27 | CHEDDAR | Somerset |
| BS | BS28 | Wedmore | Somerset |
| BS | BS29 | Banwell | Avon |
| BT | BT01 BT1, BT2, BT3, BT4, BT5, BT6, BT7, BT8, BT9, BT10, BT11, BT12, BT13, BT14, BT15, BT16, BT17, BT29 | Belfast | (County Antrim) |
| BT | BT18 | Holywood | County Down |
| BT | BT19, BT20 | BANGOR | County Down |
| BT | BT21 | Donaghadee | County Down |
| BT | BT22, BT23 | Newtownards | County Down |
| BT | BT24 | BALLYNAHINCH | County Down |
| BT | BT25 | DROMORE | County Down |
| BT | BT26 | HILLSBOROUGH | County Down |
| BT | BT27, BT28 | Lisburn | County Antrim |
| BT | BT29 | CRUMLIN | County Antrim |
| BT | BT30 | Downpatrick | County Down |
| BT | BT31 | Castlewellan | County Down |
| BT | BT32 | Banbridge | County Down |
| BT | BT33 | NEWCASTLE | County Down |
| BT | BT34 | Newry | County Down |
| BT | BT35 | Newry | County Armagh |
| BT | BT36, BT37, BT58 | Newtownabbey | County Antrim |
| BT | BT38 | Carrickfergus | County Antrim |
| BT | BT39 | Ballyclare | County Antrim |
| BT | BT40 | Larne | County Antrim |
| BT | BT41 | ANTRIM | (County Antrim) |
| BT | BT42, BT43, BT44 | Ballymena | County Antrim |
| BT | BT45 | Magherafelt | County Londonderry |
| BT | BT46 | Maghera | County Londonderry |
| BT | BT47, BT48 | LONDONDERRY | (County Londonderry) |
| BT | BT49 | Limavady | County Londonderry |
| BT | BT51, BT52 | Coleraine | County Londonderry |
| BT | BT53 | Ballymoney | County Antrim |
| BT | BT54 | BALLYCASTLE | County Antrim |
| BT | BT55 | Portstewart | County Londonderry |
| BT | BT56 | Portrush | County Antrim |
| BT | BT57 | Bushmills | County Antrim |
| BT | BT60, BT61 | Armagh | (County Armagh) |
| BT | BT62, BT63, BT64, BT65, BT66, BT67 | Craigavon | County Armagh |
| BT | BT68 | CALEDON | County Tyrone |
| BT | BT69 | AUGHNACLOY | County Tyrone |
| BT | BT70, BT71 | Dungannon | County Tyrone |
| BT | BT74, BT92, BT93, BT94 | Enniskillen | County Fermanagh |
| BT | BT75 | Fivemiletown | County Tyrone |
| BT | BT76 | Clogher | County Tyrone |
| BT | BT77 | Augher | County Tyrone |
| BT | BT78, BT79 | Omagh | County Tyrone |
| BT | BT80 | Cookstown | County Tyrone |
| BT | BT81 | Castlederg | County Tyrone |
| BT | BT82 | Strabane | County Tyrone |
| BX | BX00 varies | ZZZZ not applicable | ZZZZ non-geographic |
| CA | CA01 CA1, CA2, CA3, CA4, CA5, CA6, CA99 | CARLISLE | (Cumbria) |
| CA | CA07 CA7 | Wigton | Cumbria |
| CA | CA08 CA8 | BRAMPTON | Cumbria |
| CA | CA09 CA9 | ALSTON | Cumbria |
| CA | CA10, CA11 | PENRITH | Cumbria |
| CA | CA12 | KESWICK | Cumbria |
| CA | CA13 | Cockermouth | Cumbria |
| CA | CA14, CA95 | Workington | Cumbria |
| CA | CA15 | Maryport | Cumbria |
| CA | CA16 | Appleby-in-Westmorland | Cumbria |
| CA | CA17 | Kirkby Stephen | Cumbria |
| CA | CA18 | Ravenglass | Cumbria |
| CA | CA19 | Holmrook | Cumbria |
| CA | CA20 | Seascale | Cumbria |
| CA | CA21 | Beckermet | Cumbria |
| CA | CA22 | EGREMONT | Cumbria |
| CA | CA23 | Cleator | Cumbria |
| CA | CA24 | Moor Row | Cumbria |
| CA | CA25 | Cleator Moor | Cumbria |
| CA | CA26 | Frizington | Cumbria |
| CA | CA27 | ST. BEES | Cumbria |
| CA | CA28 | Whitehaven | Cumbria |
| CB | CB01 CB1, CB2, CB3, CB4, CB5, CB21, CB22, CB23, CB24, CB25 | Cambridge | (Cambridgeshire) |
| CB | CB06 CB6, CB7 | ELY | Cambridgeshire |
| CB | CB08 CB8 | NEWMARKET | Suffolk |
| CB | CB09 CB9 | HAVERHILL | Suffolk |
| CB | CB10, CB11 | Saffron Walden | Essex |
| CF | CF03 CF3, CF5, CF10, CF11, CF14, CF15, CF23, CF24, CF30, CF91, CF95, CF99 | Cardiff | (South Glamorgan) |
| CF | CF31, CF32, CF33, CF35 | Bridgend | Mid Glamorgan |
| CF | CF34 | Maesteg | Mid Glamorgan |
| CF | CF36 | Porthcawl | Mid Glamorgan |
| CF | CF37, CF38 | Pontypridd | Mid Glamorgan |
| CF | CF39 | Porth | Mid Glamorgan |
| CF | CF40 | Tonypandy | Mid Glamorgan |
| CF | CF41 | Pentre | Mid Glamorgan |
| CF | CF42 | Treorchy | Mid Glamorgan |
| CF | CF43 | FERNDALE | Mid Glamorgan |
| CF | CF44 | Aberdare | Mid Glamorgan |
| CF | CF45 | MOUNTAIN ASH | Mid Glamorgan |
| CF | CF46 | Treharris | Mid Glamorgan |
| CF | CF47, CF48 | Merthyr Tydfil | Mid Glamorgan |
| CF | CF61, CF71 | Llantwit Major | South Glamorgan |
| CF | CF62, CF63 | BARRY | South Glamorgan |
| CF | CF64 | Dinas Powys | South Glamorgan |
| CF | CF64 | Penarth | South Glamorgan |
| CF | CF71 | Cowbridge | South Glamorgan |
| CF | CF72 | Pontyclun | Mid Glamorgan |
| CF | CF81 | Bargoed | Mid Glamorgan |
| CF | CF82 | Hengoed | Mid Glamorgan |
| CF | CF83 | Caerphilly | Mid Glamorgan |
| CH | CH01 CH1, CH2, CH3, CH4, CH70, CH88, CH99 | Chester | (Cheshire) |
| CH | CH05 CH5 | Deeside | Clwyd |
| CH | CH06 CH6 | Bagillt | Clwyd |
| CH | CH06 CH6 | FLINT | Clwyd |
| CH | CH07 CH7 | Buckley | Clwyd |
| CH | CH07 CH7 | MOLD | Clwyd |
| CH | CH08 CH8 | Holywell | Clwyd |
| CH | CH25, CH41, CH42 | Birkenhead | Merseyside |
| CH | CH26, CH43 | Prenton | Merseyside |
| CH | CH27, CH44, CH45 | Wallasey | Merseyside |
| CH | CH28, CH29, CH30, CH31, CH32, CH46, CH47, CH48, CH49, CH60, CH61, CH62, CH63 | WIRRAL | Merseyside |
| CH | CH33, CH64 | Neston | (Merseyside) |
| CH | CH34, CH65, CH66 | Ellesmere Port | (Merseyside) |
| CM | CM00 CM0 | Burnham-on-Crouch | Essex |
| CM | CM00 CM0 | Southminster | Essex |
| CM | CM01 CM1, CM2, CM3, CM92, CM98, CM99 | Chelmsford | (Essex) |
| CM | CM04 CM4 | Ingatestone | Essex |
| CM | CM05 CM5 | ONGAR | Essex |
| CM | CM06 CM6, CM7 | DUNMOW | Essex |
| CM | CM07 CM7, CM77 | BRAINTREE | Essex |
| CM | CM08 CM8 | Witham | Essex |
| CM | CM09 CM9 | MALDON | Essex |
| CM | CM11, CM12 | Billericay | Essex |
| CM | CM13, CM14, CM15 | BRENTWOOD | Essex |
| CM | CM16 | EPPING | Essex |
| CM | CM17, CM18, CM19, CM20 | Harlow | Essex |
| CM | CM21 | Sawbridgeworth | Hertfordshire |
| CM | CM22, CM23 | Bishop's Stortford | Hertfordshire |
| CM | CM24 | STANSTED | Essex |
| CO | CO01 CO1, CO2, CO3, CO4, CO5, CO6, CO7 | Colchester | (Essex) |
| CO | CO08 CO8 | BURES | Suffolk |
| CO | CO09 CO9 | Halstead | Essex |
| CO | CO10 | SUDBURY | Suffolk |
| CO | CO11 | Manningtree | Essex |
| CO | CO12 | Harwich | Essex |
| CO | CO13 | Frinton-on-Sea | Essex |
| CO | CO14 | Walton-on-the-Naze | Essex |
| CO | CO15, CO16 | Clacton-on-Sea | Essex |
| CR | CR00 CR0, CR9, CR44, CR90 | Croydon | (Surrey) |
| CR | CR02 CR2 | South Croydon | Surrey |
| CR | CR03 CR3 | Caterham | Surrey |
| CR | CR03 CR3 | Whyteleafe | Surrey |
| CR | CR04 CR4 | Mitcham | Surrey |
| CR | CR05 CR5 | Coulsdon | Surrey |
| CR | CR06 CR6 | Warlingham | Surrey |
| CR | CR07 CR7 | Thornton Heath | Surrey |
| CR | CR08 CR8 | Kenley | Surrey |
| CR | CR08 CR8 | PURLEY | Surrey |
| CT | CT01 CT1, CT2, CT3, CT4 | Canterbury | Kent |
| CT | CT05 CT5 | Whitstable | Kent |
| CT | CT06 CT6 | HERNE BAY | Kent |
| CT | CT07 CT7, CT9 | BIRCHINGTON | Kent |
| CT | CT08 CT8 | Westgate-on-Sea | Kent |
| CT | CT09 CT9 | Margate | Kent |
| CT | CT10 | Broadstairs | Kent |
| CT | CT11, CT12 | Ramsgate | Kent |
| CT | CT13 | SANDWICH | Kent |
| CT | CT14 | DEAL | Kent |
| CT | CT15, CT16, CT17 | Dover | Kent |
| CT | CT18, CT19, CT20, CT50 | Folkestone | Kent |
| CT | CT21 | HYTHE | Kent |
| CV | CV01 CV1, CV2, CV3, CV4, CV5, CV6, CV7, CV8 | Coventry | (West Midlands) |
| CV | CV08 CV8 | Kenilworth | Warwickshire |
| CV | CV09 CV9 | Atherstone | Warwickshire |
| CV | CV10, CV11, CV13 | Nuneaton | Warwickshire |
| CV | CV12 | Bedworth | Warwickshire |
| CV | CV21, CV22, CV23 | RUGBY | Warwickshire |
| CV | CV31, CV32, CV33 | LEAMINGTON SPA | Warwickshire |
| CV | CV34, CV35 | Warwick | (Warwickshire) |
| CV | CV36, CV37 | Shipston-on-Stour | Warwickshire |
| CV | CV37 | Stratford-upon-Avon | Warwickshire |
| CV | CV47 | Southam | Warwickshire |
| CW | CW01 CW1, CW2, CW3, CW4, CW98 | Crewe | (Cheshire) |
| CW | CW05 CW5 | Nantwich | Cheshire |
| CW | CW06 CW6 | Tarporley | Cheshire |
| CW | CW07 CW7 | Winsford | Cheshire |
| CW | CW08 CW8, CW9 | Northwich | Cheshire |
| CW | CW10 | Middlewich | Cheshire |
| CW | CW11 | Sandbach | Cheshire |
| CW | CW12 | Congleton | Cheshire |
| DA | DA01 DA1, DA2, DA4, DA10 | Dartford | (Kent) |
| DA | DA03 DA3 | Longfield | Kent |
| DA | DA05 DA5 | Bexley | Kent |
| DA | DA06 DA6, DA7 | Bexleyheath | Kent |
| DA | DA07 DA7, DA16 | Welling | Kent |
| DA | DA08 DA8, DA18 | Erith | Kent |
| DA | DA09 DA9 | Greenhithe | Kent |
| DA | DA10 | Swanscombe | Kent |
| DA | DA11, DA12, DA13 | GRAVESEND | Kent |
| DA | DA14, DA15 | Sidcup | Kent |
| DA | DA17 | BELVEDERE | Kent |
| DD | DD01 DD1, DD2, DD3, DD4, DD5 | Dundee | (Angus) |
| DD | DD06 DD6 | Newport-on-Tay | Fife |
| DD | DD06 DD6 | Tayport | Fife |
| DD | DD07 DD7 | Carnoustie | Angus |
| DD | DD08 DD8 | Forfar | Angus |
| DD | DD08 DD8 | Kirriemuir | Angus |
| DD | DD09 DD9 | Brechin | Angus |
| DD | DD10 | MONTROSE | Angus |
| DD | DD11 | Arbroath | Angus |
| DE | DE01 DE1, DE3, DE21, DE22, DE23, DE24, DE65, DE72, DE73, DE74, DE99 | Derby | (Derbyshire) |
| DE | DE04 DE4 | MATLOCK | Derbyshire |
| DE | DE05 DE5 | RIPLEY | Derbyshire |
| DE | DE06 DE6 | ASHBOURNE | Derbyshire |
| DE | DE07 DE7 | Ilkeston | Derbyshire |
| DE | DE11, DE12 | Swadlincote | Derbyshire |
| DE | DE13, DE14, DE15 | BURTON-ON-TRENT | Staffordshire |
| DE | DE45 | Bakewell | Derbyshire |
| DE | DE55 | Alfreton | Derbyshire |
| DE | DE56 | Belper | Derbyshire |
| DE | DE75 | Heanor | Derbyshire |
| DG | DG01 DG1, DG2 | Dumfries | (Dumfriesshire) |
| DG | DG03 DG3 | THORNHILL | Dumfriesshire |
| DG | DG04 DG4 | Sanquhar | Dumfriesshire |
| DG | DG05 DG5 | Dalbeattie | Kirkcudbrightshire |
| DG | DG06 DG6 | Kirkcudbright | (Kirkcudbrightshire) |
| DG | DG07 DG7 | Castle Douglas | Kirkcudbrightshire |
| DG | DG08 DG8 | Newton Stewart | Wigtownshire |
| DG | DG09 DG9 | Stranraer | Wigtownshire |
| DG | DG10 | Moffat | Dumfriesshire |
| DG | DG11 | Lockerbie | Dumfriesshire |
| DG | DG12 | ANNAN | Dumfriesshire |
| DG | DG13 | Langholm | Dumfriesshire |
| DG | DG14 | Canonbie | Dumfriesshire |
| DG | DG16 | GRETNA | Dumfriesshire |
| DH | DH01 DH1, DH6, DH7, DH8, DH97, DH98, DH99 | DURHAM | (County Durham) |
| DH | DH02 DH2, DH3 | CHESTER LE STREET | County Durham |
| DH | DH04 DH4, DH5 | HOUGHTON LE SPRING | Tyne and Wear |
| DH | DH08 DH8 | Consett | County Durham |
| DH | DH08 DH8, DH9 | STANLEY | County Durham |
| DL | DL01 DL1, DL2, DL3, DL98 | Darlington | County Durham |
| DL | DL04 DL4 | Shildon | County Durham |
| DL | DL05 DL5 | Newton Aycliffe | County Durham |
| DL | DL06 DL6, DL7 | Northallerton | North Yorkshire |
| DL | DL08 DL8 | Bedale | North Yorkshire |
| DL | DL08 DL8 | Hawes | North Yorkshire |
| DL | DL08 DL8 | Leyburn | North Yorkshire |
| DL | DL09 DL9 | Catterick Garrison | North Yorkshire |
| DL | DL10, DL11 | RICHMOND | North Yorkshire |
| DL | DL12 | Barnard Castle | County Durham |
| DL | DL13, DL14 | Bishop Auckland | County Durham |
| DL | DL15 | CROOK | County Durham |
| DL | DL16 | Spennymoor | County Durham |
| DL | DL16, DL17 | Ferryhill | County Durham |
| DN | DN01 DN1, DN2, DN3, DN4, DN5, DN6, DN7, DN8, DN9, DN10, DN11, DN12, DN55 | Doncaster | South Yorkshire |
| DN | DN14 | Goole | North Humberside |
| DN | DN15, DN16, DN17 | Scunthorpe | South Humberside |
| DN | DN18 | Barton-upon-Humber | South Humberside |
| DN | DN19 | BARROW-UPON-HUMBER | South Humberside |
| DN | DN20 | Brigg | South Humberside |
| DN | DN21 | GAINSBOROUGH | Lincolnshire |
| DN | DN22 | Retford | Nottinghamshire |
| DN | DN31, DN32, DN33, DN34, DN36, DN37, DN41 | Grimsby | South Humberside |
| DN | DN35 | Cleethorpes | South Humberside |
| DN | DN38 | Barnetby | South Humberside |
| DN | DN39 | ULCEBY | South Humberside |
| DN | DN40 | Immingham | South Humberside |
| DT | DT01 DT1, DT2 | DORCHESTER | Dorset |
| DT | DT03 DT3, DT4 | WEYMOUTH | Dorset |
| DT | DT05 DT5 | PORTLAND | Dorset |
| DT | DT06 DT6 | Bridport | Dorset |
| DT | DT07 DT7 | Lyme Regis | Dorset |
| DT | DT08 DT8 | Beaminster | Dorset |
| DT | DT09 DT9 | Sherborne | Dorset |
| DT | DT10 | Sturminster Newton | Dorset |
| DT | DT11 | Blandford Forum | Dorset |
| DY | DY01 DY1, DY2, DY3 | Dudley | West Midlands |
| DY | DY04 DY4 | Tipton | West Midlands |
| DY | DY05 DY5 | Brierley Hill | West Midlands |
| DY | DY06 DY6 | Kingswinford | West Midlands |
| DY | DY07 DY7, DY8, DY9 | Stourbridge | West Midlands |
| DY | DY10, DY11, DY14 | Kidderminster | Worcestershire |
| DY | DY12 | Bewdley | Worcestershire |
| DY | DY13 | Stourport-on-Severn | Worcestershire |
| E | E001 E1, E1W, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18, E20, E77, E98 | LONDON | (London) |
| EC | EC01 EC1A, EC1M, EC1N, EC1P, EC1R, EC1V, EC1Y, EC2A, EC2M, EC2N, EC2P, EC2R, EC2V, EC2Y, EC3A, EC3M, EC3N, EC3P, EC3R, EC3V, EC4A, EC4M, EC4N, EC4P, EC4R, EC4V, EC4Y, EC50 | LONDON | (London) |
| EH | EH01 EH1, EH2, EH3, EH4, EH5, EH6, EH7, EH8, EH9, EH10, EH11, EH12, EH13, EH14, EH15, EH16, EH17, EH91, EH95, EH99 | Edinburgh | (Midlothian) |
| EH | EH14 | Balerno | Midlothian |
| EH | EH14 | Currie | Midlothian |
| EH | EH14 | Juniper Green | Midlothian |
| EH | EH18 | Lasswade | Midlothian |
| EH | EH19 | Bonnyrigg | Midlothian |
| EH | EH20 | Loanhead | Midlothian |
| EH | EH21 | Musselburgh | Midlothian |
| EH | EH22 | Dalkeith | Midlothian |
| EH | EH23 | Gorebridge | Midlothian |
| EH | EH24 | ROSEWELL | Midlothian |
| EH | EH25 | ROSLIN | Midlothian |
| EH | EH26 | Penicuik | Midlothian |
| EH | EH27 | KIRKNEWTON | Midlothian |
| EH | EH28 | NEWBRIDGE | Midlothian |
| EH | EH29 | Kirkliston | West Lothian |
| EH | EH30 | South Queensferry | West Lothian |
| EH | EH31 | Gullane | East Lothian |
| EH | EH32 | Longniddry | East Lothian |
| EH | EH32 | Prestonpans | East Lothian |
| EH | EH33, EH34, EH35 | Tranent | East Lothian |
| EH | EH36 | Humbie | East Lothian |
| EH | EH37 | PATHHEAD | Midlothian |
| EH | EH38 | HERIOT | Midlothian |
| EH | EH39 | North Berwick | East Lothian |
| EH | EH40 | East Linton | East Lothian |
| EH | EH41 | HADDINGTON | East Lothian |
| EH | EH42 | Dunbar | East Lothian |
| EH | EH43 | Walkerburn | Peeblesshire |
| EH | EH44 | Innerleithen | Peeblesshire |
| EH | EH45 | Peebles | (Peeblesshire) |
| EH | EH46 | West Linton | Peeblesshire |
| EH | EH47, EH48 | Bathgate | West Lothian |
| EH | EH49 | Linlithgow | West Lothian |
| EH | EH51 | Bo'ness | West Lothian |
| EH | EH52 | BROXBURN | West Lothian |
| EH | EH53, EH54 | LIVINGSTON | West Lothian |
| EH | EH55 | West Calder | West Lothian |
| EN | EN01 EN1, EN2, EN3 | ENFIELD | Middlesex |
| EN | EN04 EN4, EN5 | BARNET | Hertfordshire |
| EN | EN06 EN6 | Potters Bar | Hertfordshire |
| EN | EN07 EN7, EN8, EN77 | Waltham Cross | Hertfordshire |
| EN | EN09 EN9 | WALTHAM ABBEY | Essex |
| EN | EN10, EN11 | Broxbourne | Hertfordshire |
| EN | EN11 | Hoddesdon | Hertfordshire |
| EX | EX01 EX1, EX2, EX3, EX4, EX5, EX6 | Exeter | (Devon) |
| EX | EX07 EX7 | Dawlish | Devon |
| EX | EX08 EX8 | Exmouth | Devon |
| EX | EX09 EX9 | Budleigh Salterton | Devon |
| EX | EX10 | Sidmouth | Devon |
| EX | EX11 | OTTERY ST. MARY | Devon |
| EX | EX12 | SEATON | Devon |
| EX | EX13 | Axminster | Devon |
| EX | EX14 | Honiton | Devon |
| EX | EX15 | Cullompton | Devon |
| EX | EX16 | TIVERTON | Devon |
| EX | EX17 | Crediton | Devon |
| EX | EX18 | Chulmleigh | Devon |
| EX | EX19 | Winkleigh | Devon |
| EX | EX20 | North Tawton | Devon |
| EX | EX20 | Okehampton | Devon |
| EX | EX21 | Beaworthy | Devon |
| EX | EX22 | HOLSWORTHY | Devon |
| EX | EX23 | Bude | Cornwall |
| EX | EX24 | COLYTON | Devon |
| EX | EX31, EX32 | Barnstaple | Devon |
| EX | EX33 | Braunton | Devon |
| EX | EX34 | Ilfracombe | Devon |
| EX | EX34 | Woolacombe | Devon |
| EX | EX35 | Lynmouth | Devon |
| EX | EX35 | Lynton | Devon |
| EX | EX36 | South Molton | Devon |
| EX | EX37 | Umberleigh | Devon |
| EX | EX38 | TORRINGTON | Devon |
| EX | EX39 | Bideford | Devon |
| FK | FK01 FK1, FK2 | Falkirk | (Stirlingshire) |
| FK | FK03 FK3 | Grangemouth | Stirlingshire |
| FK | FK04 FK4 | Bonnybridge | Stirlingshire |
| FK | FK05 FK5 | Larbert | Stirlingshire |
| FK | FK06 FK6 | DENNY | Stirlingshire |
| FK | FK07 FK7, FK8, FK9 | Stirling | (Stirlingshire) |
| FK | FK10 | Alloa | Clackmannanshire |
| FK | FK10 | Clackmannan | (Clackmannanshire) |
| FK | FK11 | Menstrie | Clackmannanshire |
| FK | FK12 | ALVA | Clackmannanshire |
| FK | FK13 | Tillicoultry | Clackmannanshire |
| FK | FK14 | DOLLAR | Clackmannanshire |
| FK | FK15 | Dunblane | Perthshire |
| FK | FK16 | Doune | Perthshire |
| FK | FK17, FK18 | Callander | Perthshire |
| FK | FK19 | Lochearnhead | Perthshire |
| FK | FK20 | Crianlarich | Perthshire |
| FK | FK21 | Killin | Perthshire |
| FY | FY00 FY0, FY1, FY2, FY3, FY4 | Blackpool | (Lancashire) |
| FY | FY05 FY5 | Thornton-Cleveleys | Lancashire |
| FY | FY06 FY6 | Poulton-le-Fylde | Lancashire |
| FY | FY07 FY7 | Fleetwood | Lancashire |
| FY | FY08 FY8 | LYTHAM ST. ANNES | Lancashire |
| G | G001 G1, G2, G3, G4, G5, G9, G11, G12, G13, G14, G15, G20, G21, G22, G23, G31, G32, G33, G34, G40, G41, G42, G43, G44, G45, G46, G51, G52, G53, G58, G60, G61, G62, G63, G64, G65, G66, G67, G68, G69, G70, G71, G72, G73, G74, G75, G76, G77, G78, G79, G90 | Glasgow | (Lanarkshire) |
| G | G081 G81 | Clydebank | Dunbartonshire |
| G | G082 G82 | Dumbarton | (Dunbartonshire) |
| G | G083 G83 | ALEXANDRIA | Dunbartonshire |
| G | G083 G83 | ARROCHAR | Dunbartonshire |
| G | G084 G84 | Helensburgh | Dunbartonshire |
| GL | GL01 GL1, GL2, GL3, GL4, GL19 | Gloucester | (Gloucestershire) |
| GL | GL05 GL5, GL6 | Stroud | Gloucestershire |
| GL | GL07 GL7 | Cirencester | Gloucestershire |
| GL | GL07 GL7 | Fairford | Gloucestershire |
| GL | GL07 GL7 | Lechlade | Gloucestershire |
| GL | GL08 GL8 | Tetbury | Gloucestershire |
| GL | GL09 GL9 | BADMINTON | Avon |
| GL | GL10 | STONEHOUSE | Gloucestershire |
| GL | GL11 | Dursley | Gloucestershire |
| GL | GL11, GL12 | Wotton-under-Edge | Gloucestershire |
| GL | GL13 | BERKELEY | Gloucestershire |
| GL | GL14 | Cinderford | Gloucestershire |
| GL | GL14 | NEWNHAM | Gloucestershire |
| GL | GL14 | Westbury-on-Severn | Gloucestershire |
| GL | GL15 | BLAKENEY | Gloucestershire |
| GL | GL15 | Lydney | Gloucestershire |
| GL | GL16 | COLEFORD | Gloucestershire |
| GL | GL17 | Drybrook | Gloucestershire |
| GL | GL17 | Longhope | Gloucestershire |
| GL | GL17 | Lydbrook | Gloucestershire |
| GL | GL17 | Mitcheldean | Gloucestershire |
| GL | GL17 | Ruardean | Gloucestershire |
| GL | GL18 | Dymock | Gloucestershire |
| GL | GL18 | Newent | Gloucestershire |
| GL | GL20 | Tewkesbury | Gloucestershire |
| GL | GL50, GL51, GL52, GL53, GL54 | Cheltenham | Gloucestershire |
| GL | GL55 | Chipping Campden | Gloucestershire |
| GL | GL56 | Moreton-in-Marsh | Gloucestershire |
| GU | GU01 GU1, GU2, GU3, GU4, GU5 | Guildford | Surrey |
| GU | GU06 GU6 | Cranleigh | Surrey |
| GU | GU07 GU7, GU8 | Godalming | Surrey |
| GU | GU09 GU9, GU10 | Farnham | Surrey |
| GU | GU11, GU12 | Aldershot | Hampshire |
| GU | GU14, GU17 | FARNBOROUGH | Hampshire |
| GU | GU15, GU16, GU17, GU95 | Camberley | Surrey |
| GU | GU18 | Lightwater | Surrey |
| GU | GU19 | Bagshot | Surrey |
| GU | GU20 | Windlesham | Surrey |
| GU | GU21, GU22, GU23, GU24 | Woking | Surrey |
| GU | GU25 | Virginia Water | Surrey |
| GU | GU26, GU27 | Hindhead | Surrey |
| GU | GU27 | Haslemere | Surrey |
| GU | GU28 | Petworth | West Sussex |
| GU | GU29 | Midhurst | West Sussex |
| GU | GU30 | Liphook | Hampshire |
| GU | GU31, GU32 | Petersfield | Hampshire |
| GU | GU33 | Liss | Hampshire |
| GU | GU34 | ALTON | Hampshire |
| GU | GU35 | Bordon | Hampshire |
| GU | GU46 | Yateley | Hampshire |
| GU | GU47 | SANDHURST | Berkshire |
| GU | GU51, GU52 | FLEET | Hampshire |
| GY | GY01 GY1, GY2, GY3, GY4, GY5, GY6, GY7, GY8, GY9, GY10 | Guernsey | (Channel Isles) |
| HA | HA00 HA0, HA9 | Wembley | Middlesex |
| HA | HA01 HA1, HA2, HA3 | HARROW | Middlesex |
| HA | HA04 HA4 | Ruislip | Middlesex |
| HA | HA05 HA5 | Pinner | Middlesex |
| HA | HA06 HA6 | NORTHWOOD | Middlesex |
| HA | HA07 HA7 | Stanmore | Middlesex |
| HA | HA08 HA8 | Edgware | Middlesex |
| HD | HD01 HD1, HD2, HD3, HD4, HD5, HD7, HD8 | Huddersfield | (West Yorkshire) |
| HD | HD06 HD6 | Brighouse | West Yorkshire |
| HD | HD09 HD9 | Holmfirth | West Yorkshire |
| HG | HG01 HG1, HG2, HG3 | Harrogate | North Yorkshire |
| HG | HG04 HG4 | Ripon | North Yorkshire |
| HG | HG05 HG5 | Knaresborough | North Yorkshire |
| HP | HP01 HP1, HP2, HP3 | Hemel Hempstead | Hertfordshire |
| HP | HP04 HP4 | Berkhamsted | Hertfordshire |
| HP | HP05 HP5 | Chesham | Buckinghamshire |
| HP | HP06 HP6, HP7 | Amersham | Buckinghamshire |
| HP | HP08 HP8 | CHALFONT ST. GILES | Buckinghamshire |
| HP | HP09 HP9 | Beaconsfield | Buckinghamshire |
| HP | HP10, HP11, HP12, HP13, HP14, HP15 | High Wycombe | Buckinghamshire |
| HP | HP16 | Great Missenden | Buckinghamshire |
| HP | HP17, HP18, HP19, HP20, HP21, HP22 | Aylesbury | Buckinghamshire |
| HP | HP22, HP27 | Princes Risborough | Buckinghamshire |
| HP | HP23 | Tring | Hertfordshire |
| HR | HR01 HR1, HR2, HR3, HR4 | Hereford | (Herefordshire) |
| HR | HR05 HR5 | KINGTON | Herefordshire |
| HR | HR06 HR6 | Leominster | Herefordshire |
| HR | HR07 HR7 | Bromyard | Herefordshire |
| HR | HR08 HR8 | Ledbury | Herefordshire |
| HR | HR09 HR9 | Ross-on-Wye | Herefordshire |
| HS | HS01 HS1 | Stornoway | Isle of Lewis |
| HS | HS02 HS2 | ISLE OF LEWIS | Isle of Lewis |
| HS | HS03 HS3, HS5 | ISLE OF HARRIS | Isle of Harris |
| HS | HS04 HS4 | ISLE OF SCALPAY | Isle of Scalpay |
| HS | HS06 HS6 | ISLE OF NORTH UIST | Isle of North Uist |
| HS | HS07 HS7 | ISLE OF BENBECULA | Isle of Benbecula |
| HS | HS08 HS8 | ISLE OF SOUTH UIST | Inverness-shire |
| HS | HS09 HS9 | ISLE OF BARRA | Isle of Barra |
| HU | HU01 HU1, HU2, HU3, HU4, HU5, HU6, HU7, HU8, HU9, HU10, HU11, HU12 | HULL | (North Humberside) |
| HU | HU13 | Hessle | North Humberside |
| HU | HU14 | North Ferriby | North Humberside |
| HU | HU15 | BROUGH | North Humberside |
| HU | HU16, HU20 | COTTINGHAM | North Humberside |
| HU | HU17 | Beverley | North Humberside |
| HU | HU18 | Hornsea | North Humberside |
| HU | HU19 | Withernsea | North Humberside |
| HX | HX01 HX1, HX2, HX3, HX4 | HALIFAX | West Yorkshire |
| HX | HX01 HX1, HX5 | Elland | West Yorkshire |
| HX | HX06 HX6 | Sowerby Bridge | West Yorkshire |
| HX | HX07 HX7 | Hebden Bridge | West Yorkshire |
| IG | IG01 IG1, IG2, IG3, IG4, IG5, IG6 | Ilford | Essex |
| IG | IG07 IG7, IG8 | Chigwell | Essex |
| IG | IG08 IG8 | Woodford Green | Essex |
| IG | IG09 IG9 | Buckhurst Hill | Essex |
| IG | IG10 | Loughton | Essex |
| IG | IG11 | Barking | Essex |
| IM | IM01 IM1, IM2, IM3, IM4, IM5, IM6, IM7, IM8, IM9, IM99 | Isle of Man | (Isle of Man) |
| IP | IP01 IP1, IP2, IP3, IP4, IP5, IP6, IP7, IP8, IP9, IP10 | Ipswich | (Suffolk) |
| IP | IP11 | Felixstowe | Suffolk |
| IP | IP12, IP13 | WOODBRIDGE | Suffolk |
| IP | IP14 | Stowmarket | Suffolk |
| IP | IP15 | Aldeburgh | Suffolk |
| IP | IP16 | Leiston | Suffolk |
| IP | IP17 | Saxmundham | Suffolk |
| IP | IP18 | Southwold | Suffolk |
| IP | IP19 | Halesworth | Suffolk |
| IP | IP20 | HARLESTON | Norfolk |
| IP | IP21, IP22, IP98 | Diss | Norfolk |
| IP | IP21, IP23 | EYE | Suffolk |
| IP | IP24, IP25, IP26 | Thetford | Norfolk |
| IP | IP27 | BRANDON | Suffolk |
| IP | IP28, IP29, IP30, IP31, IP32, IP33 | BURY ST. EDMUNDS | Suffolk |
| IV | IV01 IV1, IV2, IV3, IV5, IV13, IV63, IV99 | Inverness | (Inverness-shire) |
| IV | IV04 IV4 | Beauly | Inverness-shire |
| IV | IV06 IV6 | Muir of Ord | Ross-shire |
| IV | IV07 IV7, IV15, IV16 | Dingwall | Ross-shire |
| IV | IV08 IV8 | Munlochy | Ross-shire |
| IV | IV09 IV9 | Avoch | Ross-shire |
| IV | IV10 | Fortrose | Ross-shire |
| IV | IV11 | Cromarty | Ross-shire |
| IV | IV12 | Nairn | (Nairnshire) |
| IV | IV14 | Strathpeffer | Ross-shire |
| IV | IV17 | Alness | Ross-shire |
| IV | IV18 | Invergordon | Ross-shire |
| IV | IV19, IV20 | Tain | Ross-shire |
| IV | IV21 | Gairloch | Ross-shire |
| IV | IV22 | Achnasheen | Ross-shire |
| IV | IV23 | Garve | Ross-shire |
| IV | IV24 | Ardgay | Sutherland |
| IV | IV25 | Dornoch | Sutherland |
| IV | IV26 | Ullapool | Ross-shire |
| IV | IV27 | Lairg | Sutherland |
| IV | IV28 | Rogart | Sutherland |
| IV | IV30 | ELGIN | Morayshire |
| IV | IV31 | Lossiemouth | Morayshire |
| IV | IV32 | Fochabers | Morayshire |
| IV | IV36 | Forres | Morayshire |
| IV | IV40 | KYLE | Ross-shire |
| IV | IV41, IV42, IV43, IV44, IV45, IV46, IV47, IV48, IV49, IV55, IV56 | ISLE OF SKYE | Isle of Skye |
| IV | IV51 | Portree | Isle of Skye |
| IV | IV52 | Plockton | Ross-shire |
| IV | IV53 | STROME FERRY | Ross-shire |
| IV | IV54 | STRATHCARRON | Ross-shire |
| JE | JE01 JE1, JE2, JE3, JE4, JE5 | Jersey | (Channel Isles) |
| KA | KA01 KA1, KA2, KA3 | Kilmarnock | Ayrshire |
| KA | KA04 KA4 | GALSTON | Ayrshire |
| KA | KA05 KA5 | Mauchline | Ayrshire |
| KA | KA06 KA6, KA7, KA8 | Ayr | (Ayrshire) |
| KA | KA09 KA9 | Prestwick | Ayrshire |
| KA | KA10 | Troon | Ayrshire |
| KA | KA11, KA12 | IRVINE | Ayrshire |
| KA | KA13 | Kilwinning | Ayrshire |
| KA | KA14, KA15 | Beith | Ayrshire |
| KA | KA16 | Newmilns | Ayrshire |
| KA | KA17 | Darvel | Ayrshire |
| KA | KA18 | Cumnock | Ayrshire |
| KA | KA19 | Maybole | Ayrshire |
| KA | KA20 | Stevenston | Ayrshire |
| KA | KA21 | Saltcoats | Ayrshire |
| KA | KA22 | Ardrossan | Ayrshire |
| KA | KA23 | West Kilbride | Ayrshire |
| KA | KA24 | DALRY | Ayrshire |
| KA | KA25 | Kilbirnie | Ayrshire |
| KA | KA26 | Girvan | Ayrshire |
| KA | KA27 | Isle of Arran | Isle of Arran |
| KA | KA28 | ISLE OF CUMBRAE | Isle of Cumbrae |
| KA | KA29, KA30 | Largs | Ayrshire |
| KT | KT01 KT1, KT2 | Kingston upon Thames | Surrey |
| KT | KT03 KT3 | New Malden | Surrey |
| KT | KT04 KT4 | Worcester Park | Surrey |
| KT | KT05 KT5, KT6 | Surbiton | Surrey |
| KT | KT07 KT7 | Thames Ditton | Surrey |
| KT | KT08 KT8 | East Molesey | Surrey |
| KT | KT08 KT8 | West Molesey | Surrey |
| KT | KT09 KT9 | Chessington | Surrey |
| KT | KT10 | Esher | Surrey |
| KT | KT11 | COBHAM | Surrey |
| KT | KT12 | Walton-on-Thames | Surrey |
| KT | KT13 | Weybridge | Surrey |
| KT | KT14 | West Byfleet | Surrey |
| KT | KT15 | Addlestone | Surrey |
| KT | KT16 | Chertsey | Surrey |
| KT | KT17, KT18, KT19 | Epsom | Surrey |
| KT | KT20 | Tadworth | Surrey |
| KT | KT21 | Ashtead | Surrey |
| KT | KT22, KT23, KT24 | Leatherhead | Surrey |
| KW | KW01 KW1 | WICK | Caithness |
| KW | KW02 KW2, KW3 | Lybster | Caithness |
| KW | KW05 KW5 | Latheron | Caithness |
| KW | KW06 KW6 | Dunbeath | Caithness |
| KW | KW07 KW7 | BERRIEDALE | Caithness |
| KW | KW08 KW8 | Helmsdale | Sutherland |
| KW | KW09 KW9 | Brora | Sutherland |
| KW | KW10 | Golspie | Sutherland |
| KW | KW11 | Kinbrace | Sutherland |
| KW | KW12 | Halkirk | Caithness |
| KW | KW13 | Forsinard | Sutherland |
| KW | KW14 | Thurso | Caithness |
| KW | KW15 | Kirkwall | Orkney |
| KW | KW16 | Stromness | Orkney |
| KW | KW17 | Orkney | (Orkney) |
| KY | KY01 KY1, KY2 | Kirkcaldy | Fife |
| KY | KY03 KY3 | Burntisland | Fife |
| KY | KY04 KY4 | Cowdenbeath | Fife |
| KY | KY04 KY4 | Kelty | Fife |
| KY | KY05 KY5 | Lochgelly | Fife |
| KY | KY06 KY6, KY7 | Glenrothes | Fife |
| KY | KY08 KY8, KY9 | LEVEN | Fife |
| KY | KY10 | Anstruther | Fife |
| KY | KY11, KY12, KY99 | Dunfermline | Fife |
| KY | KY11 | Inverkeithing | Fife |
| KY | KY13 | Kinross | (Kinross-shire) |
| KY | KY14, KY15 | Cupar | Fife |
| KY | KY16 | ST. ANDREWS | Fife |
| L | L001 L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12, L13, L14, L15, L16, L17, L18, L19, L20, L21, L22, L23, L24, L25, L26, L27, L28, L29, L31, L32, L33, L36, L37, L38, L67, L68, L69, L70, L71, L72, L73, L74, L75 | Liverpool | (Merseyside) |
| L | L020 L20, L30, L69, L80, GIR | Bootle | Merseyside |
| L | L034 L34, L35 | Prescot | Merseyside |
| L | L039 L39, L40 | Ormskirk | Lancashire |
| LA | LA01 LA1, LA2 | LANCASTER | (Lancashire) |
| LA | LA03 LA3, LA4 | Morecambe | Lancashire |
| LA | LA05 LA5, LA6 | Carnforth | Lancashire |
| LA | LA07 LA7 | Milnthorpe | Cumbria |
| LA | LA08 LA8, LA9 | Kendal | Cumbria |
| LA | LA10 | Sedbergh | Cumbria |
| LA | LA11 | Grange-over-Sands | Cumbria |
| LA | LA12 | Ulverston | Cumbria |
| LA | LA13, LA14 | Barrow-in-Furness | Cumbria |
| LA | LA14, LA15 | Dalton-in-Furness | Cumbria |
| LA | LA16 | Askam-in-Furness | Cumbria |
| LA | LA17 | Kirkby-in-Furness | Cumbria |
| LA | LA18, LA19 | Millom | Cumbria |
| LA | LA20 | Broughton-in-Furness | Cumbria |
| LA | LA21 | CONISTON | Cumbria |
| LA | LA22 | Ambleside | Cumbria |
| LA | LA23 | WINDERMERE | Cumbria |
| LD | LD01 LD1 | Llandrindod Wells | Powys |
| LD | LD02 LD2 | Builth Wells | Powys |
| LD | LD03 LD3 | Brecon | Powys |
| LD | LD04 LD4 | Llangammarch Wells | Powys |
| LD | LD05 LD5 | Llanwrtyd Wells | Powys |
| LD | LD06 LD6 | Rhayader | Powys |
| LD | LD07 LD7 | KNIGHTON | Powys |
| LD | LD08 LD8 | Presteigne | Powys |
| LE | LE01 LE1, LE2, LE3, LE4, LE5, LE6, LE7, LE8, LE9, LE19, LE21, LE41, LE55, LE87, LE94, LE95 | Leicester | (Leicestershire) |
| LE | LE10 | Hinckley | Leicestershire |
| LE | LE11, LE12 | Loughborough | Leicestershire |
| LE | LE13, LE14 | Melton Mowbray | Leicestershire |
| LE | LE15 | Oakham | Leicestershire / Rutland |
| LE | LE16 | Market Harborough | Leicestershire / Rutland |
| LE | LE17 | Lutterworth | Leicestershire |
| LE | LE18 | WIGSTON | Leicestershire |
| LE | LE65 | Ashby-de-la-Zouch | Leicestershire |
| LE | LE67 | Coalville | Leicestershire |
| LE | LE67 | Ibstock | Leicestershire |
| LE | LE67 | Markfield | Leicestershire |
| LL | LL11, LL12, LL13, LL14 | Wrexham | Clwyd |
| LL | LL15 | Ruthin | Clwyd |
| LL | LL16 | Denbigh | Clwyd |
| LL | LL17, LL18 | ST. ASAPH | Clwyd |
| LL | LL18 | Rhyl | Clwyd |
| LL | LL19 | Prestatyn | Clwyd |
| LL | LL20 | Llangollen | Clwyd |
| LL | LL21 | Corwen | Clwyd |
| LL | LL22 | Abergele | Clwyd |
| LL | LL23 | BALA | Gwynedd |
| LL | LL24 | Betws-y-Coed | Gwynedd |
| LL | LL25 | Dolwyddelan | Gwynedd |
| LL | LL26 | Llanrwst | Gwynedd |
| LL | LL27 | Trefriw | Gwynedd |
| LL | LL28, LL29 | Colwyn Bay | Clwyd |
| LL | LL30 | Llandudno | Gwynedd |
| LL | LL31, LL32 | Conwy | Gwynedd |
| LL | LL31 | Llandudno Junction | Gwynedd |
| LL | LL33 | Llanfairfechan | Gwynedd |
| LL | LL34 | Penmaenmawr | Gwynedd |
| LL | LL35 | ABERDYFI | Gwynedd |
| LL | LL36 | Tywyn | Gwynedd |
| LL | LL37 | Llwyngwril | Gwynedd |
| LL | LL38 | Fairbourne | Gwynedd |
| LL | LL39 | Arthog | Gwynedd |
| LL | LL40 | Dolgellau | Gwynedd |
| LL | LL41 | Blaenau Ffestiniog | Gwynedd |
| LL | LL42 | Barmouth | Gwynedd |
| LL | LL43 | TALYBONT | Gwynedd |
| LL | LL44 | Dyffryn Ardudwy | Gwynedd |
| LL | LL45 | Llanbedr | Gwynedd |
| LL | LL46 | Harlech | Gwynedd |
| LL | LL47 | Talsarnau | Gwynedd |
| LL | LL48 | Penrhyndeudraeth | Gwynedd |
| LL | LL49 | Porthmadog | Gwynedd |
| LL | LL51 | Garndolbenmaen | Gwynedd |
| LL | LL52 | Criccieth | Gwynedd |
| LL | LL53 | Pwllheli | Gwynedd |
| LL | LL54, LL55 | Caernarfon | Gwynedd |
| LL | LL56 | Y Felinheli | Gwynedd |
| LL | LL57 | BANGOR | Gwynedd |
| LL | LL58 | Beaumaris | Gwynedd |
| LL | LL59 | Menai Bridge | Gwynedd |
| LL | LL60 | Gaerwen | Gwynedd |
| LL | LL61 | Llanfairpwllgwyngyll | Gwynedd |
| LL | LL62 | Bodorgan | Gwynedd |
| LL | LL63 | TY CROES | Gwynedd |
| LL | LL64, LL77 | Rhosneigr | Gwynedd |
| LL | LL65 | Holyhead | Gwynedd |
| LL | LL66 | Rhosgoch | Gwynedd |
| LL | LL67 | Cemaes Bay | Gwynedd |
| LL | LL68 | Amlwch | Gwynedd |
| LL | LL69 | Penysarn | Gwynedd |
| LL | LL70 | DULAS | Gwynedd |
| LL | LL71 | LLANERCHYMEDD | Gwynedd |
| LL | LL72 | MOELFRE | Gwynedd |
| LL | LL73 | MARIANGLAS | Gwynedd |
| LL | LL74 | Tyn-y-Gongl | Gwynedd |
| LL | LL75 | Pentraeth | Gwynedd |
| LL | LL76 | Llanbedrgoch | Gwynedd |
| LL | LL77 | Llangefni | Gwynedd |
| LL | LL78 | BRYNTEG | Gwynedd |
| LN | LN01 LN1, LN2, LN3, LN4, LN5, LN6 | LINCOLN | (Lincolnshire) |
| LN | LN07 LN7, LN8 | Market Rasen | Lincolnshire |
| LN | LN09 LN9 | HORNCASTLE | Lincolnshire |
| LN | LN10 | Woodhall Spa | Lincolnshire |
| LN | LN11 | LOUTH | Lincolnshire |
| LN | LN12 | Mablethorpe | Lincolnshire |
| LN | LN13 | ALFORD | Lincolnshire |
| LS | LS01 LS1, LS2, LS3, LS4, LS5, LS6, LS7, LS8, LS9, LS10, LS11, LS12, LS13, LS14, LS15, LS16, LS17, LS18, LS19, LS20, LS25, LS26, LS27, LS88, LS98, LS99 | Leeds | (West Yorkshire) |
| LS | LS21 | Otley | West Yorkshire |
| LS | LS22, LS23 | Wetherby | West Yorkshire |
| LS | LS24 | Tadcaster | North Yorkshire |
| LS | LS28 | Pudsey | West Yorkshire |
| LS | LS29 | Ilkley | West Yorkshire |
| LU | LU01 LU1, LU2, LU3, LU4 | Luton | (Bedfordshire) |
| LU | LU05 LU5, LU6 | Dunstable | Bedfordshire |
| LU | LU07 LU7 | Leighton Buzzard | Bedfordshire |
| M | M001 M1, M2, M3, M4, M8, M9, M11, M12, M13, M14, M15, M16, M17, M18, M19, M20, M21, M22, M23, M24, M25, M26, M27, M28, M29, M30, M31, M32, M34, M35, M38, M40, M41, M43, M44, M45, M46, M60, M61, M90, M99 | Manchester | (Lancashire) |
| M | M003 M3, M5, M6, M7, M50, M60 | SALFORD | (Lancashire) |
| M | M033 M33 | SALE | Cheshire |
| ME | ME01 ME1, ME2, ME3 | ROCHESTER | Kent |
| ME | ME04 ME4, ME5 | CHATHAM | Kent |
| ME | ME06 ME6, ME20 | Aylesford | Kent |
| ME | ME06 ME6 | Snodland | Kent |
| ME | ME06 ME6, ME19 | West Malling | Kent |
| ME | ME07 ME7, ME8 | GILLINGHAM | Kent |
| ME | ME09 ME9, ME10 | Sittingbourne | Kent |
| ME | ME11 | Queenborough | Kent |
| ME | ME12 | Sheerness | Kent |
| ME | ME13 | Faversham | Kent |
| ME | ME14, ME15, ME16, ME17, ME18, ME99 | Maidstone | Kent |
| MK | MK01 MK1, MK2, MK3, MK4, MK5, MK6, MK7, MK8, MK9, MK10, MK11, MK12, MK13, MK14, MK15, MK17, MK19, MK77 | Milton Keynes | (Buckinghamshire) |
| MK | MK16 | Newport Pagnell | Buckinghamshire |
| MK | MK18 | Buckingham | (Buckinghamshire) |
| MK | MK40, MK41, MK42, MK43, MK44, MK45 | Bedford | (Bedfordshire) |
| MK | MK46 | OLNEY | Buckinghamshire |
| ML | ML01 ML1 | Motherwell | Lanarkshire |
| ML | ML02 ML2 | Wishaw | Lanarkshire |
| ML | ML03 ML3 | HAMILTON | Lanarkshire |
| ML | ML04 ML4 | Bellshill | Lanarkshire |
| ML | ML05 ML5 | Coatbridge | Lanarkshire |
| ML | ML06 ML6 | AIRDRIE | Lanarkshire |
| ML | ML07 ML7 | Shotts | Lanarkshire |
| ML | ML08 ML8 | Carluke | Lanarkshire |
| ML | ML09 ML9 | Larkhall | Lanarkshire |
| ML | ML10 | Strathaven | Lanarkshire |
| ML | ML11 | Lanark | (Lanarkshire) |
| ML | ML12 | BIGGAR | Lanarkshire |
| N | N001 N1, N1C, N1P, N2, N3, N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14, N15, N16, N17, N18, N19, N20, N21, N22, N81 | LONDON | (London) |
| NE | NE01 NE1, NE2, NE3, NE4, NE5, NE6, NE7, NE12, NE13, NE15, NE16, NE17, NE18, NE19, NE20, NE27, NE82, NE83, NE85, NE88, NE98, NE99 | Newcastle upon Tyne | (Tyne and Wear) |
| NE | NE08 NE8, NE9, NE10, NE11, NE92 | Gateshead | Tyne and Wear |
| NE | NE21 | Blaydon-on-Tyne | Tyne and Wear |
| NE | NE22 | Bedlington | Northumberland |
| NE | NE23 | Cramlington | Northumberland |
| NE | NE24 | BLYTH | Northumberland |
| NE | NE25, NE26 | Whitley Bay | Tyne and Wear |
| NE | NE28 | Wallsend | Tyne and Wear |
| NE | NE29, NE30 | North Shields | Tyne and Wear |
| NE | NE31 | Hebburn | Tyne and Wear |
| NE | NE32 | Jarrow | Tyne and Wear |
| NE | NE33, NE34 | South Shields | Tyne and Wear |
| NE | NE35 | Boldon Colliery | Tyne and Wear |
| NE | NE36 | East Boldon | Tyne and Wear |
| NE | NE37, NE38 | WASHINGTON | Tyne and Wear |
| NE | NE39 | Rowlands Gill | Tyne and Wear |
| NE | NE40 | RYTON | Tyne and Wear |
| NE | NE41 | Wylam | Northumberland |
| NE | NE42 | Prudhoe | Northumberland |
| NE | NE43 | Stocksfield | Northumberland |
| NE | NE44 | Riding Mill | Northumberland |
| NE | NE45 | Corbridge | Northumberland |
| NE | NE46, NE47, NE48 | Hexham | Northumberland |
| NE | NE49 | Haltwhistle | Northumberland |
| NE | NE61, NE65 | MORPETH | Northumberland |
| NE | NE62 | Choppington | Northumberland |
| NE | NE63 | Ashington | Northumberland |
| NE | NE64 | Newbiggin-by-the-Sea | Northumberland |
| NE | NE66 | Alnwick | Northumberland |
| NE | NE66, NE69 | Bamburgh | Northumberland |
| NE | NE67 | Chathill | Northumberland |
| NE | NE68 | Seahouses | Northumberland |
| NE | NE70 | BELFORD | Northumberland |
| NE | NE71 | Wooler | Northumberland |
| NG | NG01 NG1, NG2, NG3, NG4, NG5, NG6, NG7, NG8, NG9, NG10, NG11, NG12, NG13, NG14, NG15, NG16, NG17, NG80, NG90 | Nottingham | (Nottinghamshire) |
| NG | NG17 | Sutton-in-Ashfield | Nottinghamshire |
| NG | NG18, NG19, NG20, NG21, NG70 | Mansfield | Nottinghamshire |
| NG | NG22, NG23, NG24 | NEWARK | Nottinghamshire |
| NG | NG25 | SOUTHWELL | Nottinghamshire |
| NG | NG31, NG32, NG33 | Grantham | Lincolnshire |
| NG | NG34 | Sleaford | Lincolnshire |
| NN | NN01 NN1, NN2, NN3, NN4, NN5, NN6, NN7 | Northampton | (Northamptonshire) |
| NN | NN08 NN8, NN9, NN29 | Wellingborough | Northamptonshire |
| NN | NN10 | Rushden | Northamptonshire |
| NN | NN11 | Daventry | Northamptonshire |
| NN | NN12 | Towcester | Northamptonshire |
| NN | NN13 | Brackley | Northamptonshire |
| NN | NN14, NN15, NN16 | Kettering | Northamptonshire |
| NN | NN17, NN18 | Corby | Northamptonshire |
| NP | NP04 NP4 | Pontypool | Gwent |
| NP | NP07 NP7 | Abergavenny | Gwent |
| NP | NP07 NP7, NP8 | Crickhowell | Powys |
| NP | NP10, NP11, NP18, NP19, NP20 | NEWPORT | Gwent |
| NP | NP12 | BLACKWOOD | Gwent |
| NP | NP13 | Abertillery | Gwent |
| NP | NP15 | Usk | Gwent |
| NP | NP16 | Chepstow | Gwent |
| NP | NP22 | Tredegar | Gwent |
| NP | NP23 | Ebbw Vale | Gwent |
| NP | NP24 | New Tredegar | Gwent |
| NP | NP25 | Monmouth | Gwent |
| NP | NP26 | CALDICOT | Gwent |
| NP | NP44 | Cwmbran | Gwent |
| NR | NR01 NR1, NR2, NR3, NR4, NR5, NR6, NR7, NR8, NR9, NR10, NR11, NR12, NR13, NR14, NR15, NR16, NR18, NR19, NR26, NR28, NR99 | Norwich | (Norfolk) |
| NR | NR17 | Attleborough | Norfolk |
| NR | NR18 | Wymondham | Norfolk |
| NR | NR19, NR20 | Dereham | Norfolk |
| NR | NR21 | Fakenham | Norfolk |
| NR | NR22 | Walsingham | Norfolk |
| NR | NR23 | Wells-next-the-Sea | Norfolk |
| NR | NR24 | Melton Constable | Norfolk |
| NR | NR25 | HOLT | Norfolk |
| NR | NR26 | Sheringham | Norfolk |
| NR | NR27 | Cromer | Norfolk |
| NR | NR28 | North Walsham | Norfolk |
| NR | NR29, NR30, NR31 | Great Yarmouth | Norfolk |
| NR | NR32, NR33 | Lowestoft | Suffolk |
| NR | NR34 | Beccles | Suffolk |
| NR | NR35 | Bungay | Suffolk |
| NW | NW01 NW1, NW1W, NW2, NW3, NW4, NW5, NW6, NW7, NW8, NW9, NW10, NW11, NW26 | LONDON | (London) |
| OL | OL01 OL1, OL2, OL3, OL4, OL8, OL9, OL95 | Oldham | (Lancashire) |
| OL | OL05 OL5, OL6, OL7 | Ashton-under-Lyne | Lancashire |
| OL | OL10 | HEYWOOD | Lancashire |
| OL | OL11, OL12, OL16 | Rochdale | Lancashire |
| OL | OL13 | Bacup | Lancashire |
| OL | OL14 | Todmorden | Lancashire |
| OL | OL15, OL16 | LITTLEBOROUGH | Lancashire |
| OX | OX01 OX1, OX2, OX3, OX4, OX33, OX44 | Oxford | (Oxfordshire) |
| OX | OX05 OX5 | Kidlington | Oxfordshire |
| OX | OX07 OX7 | Chipping Norton | Oxfordshire |
| OX | OX09 OX9 | Thame | Oxfordshire |
| OX | OX10 | WALLINGFORD | Oxfordshire |
| OX | OX11 | Didcot | Oxfordshire |
| OX | OX12 | Wantage | Oxfordshire |
| OX | OX13, OX14 | ABINGDON | Oxfordshire |
| OX | OX15, OX16, OX17 | Banbury | Oxfordshire |
| OX | OX18 | BAMPTON | Oxfordshire |
| OX | OX18 | Burford | Oxfordshire |
| OX | OX18 | CARTERTON | Oxfordshire |
| OX | OX20 | WOODSTOCK | Oxfordshire |
| OX | OX25, OX26, OX27 | Bicester | Oxfordshire |
| OX | OX28, OX29 | Witney | Oxfordshire |
| OX | OX39 | Chinnor | Oxfordshire |
| OX | OX49 | WATLINGTON | Oxfordshire |
| PA | PA01 PA1, PA2, PA3 | PAISLEY | Renfrewshire |
| PA | PA04 PA4 | Renfrew | (Renfrewshire) |
| PA | PA05 PA5, PA6, PA9, PA10 | Johnstone | Renfrewshire |
| PA | PA07 PA7 | BISHOPTON | Renfrewshire |
| PA | PA08 PA8 | Erskine | Renfrewshire |
| PA | PA11 | Bridge of Weir | Renfrewshire |
| PA | PA12 | Lochwinnoch | Renfrewshire |
| PA | PA13 | Kilmacolm | Renfrewshire |
| PA | PA14 | Port Glasgow | Renfrewshire |
| PA | PA15, PA16 | Greenock | Renfrewshire |
| PA | PA17 | Skelmorlie | Ayrshire |
| PA | PA18 | Wemyss Bay | Renfrewshire |
| PA | PA19 | Gourock | Renfrewshire |
| PA | PA20 | Isle of Bute | Isle of Bute |
| PA | PA21 | Tighnabruaich | Argyll |
| PA | PA22 | Colintraive | Argyll |
| PA | PA23 | Dunoon | Argyll |
| PA | PA24, PA25, PA26, PA27 | Cairndow | Argyll |
| PA | PA28 | Campbeltown | Argyll |
| PA | PA29 | TARBERT | Argyll |
| PA | PA30, PA31 | Lochgilphead | Argyll |
| PA | PA32 | Inveraray | Argyll |
| PA | PA33 | Dalmally | Argyll |
| PA | PA34, PA37, PA80 | Oban | Argyll |
| PA | PA35 | Taynuilt | Argyll |
| PA | PA36 | Bridge of Orchy | Argyll |
| PA | PA38 | Appin | Argyll |
| PA | PA41 | ISLE OF GIGHA | Isle of Gigha |
| PA | PA42, PA43, PA44, PA45, PA46, PA47, PA48, PA49 | ISLE OF ISLAY | Isle of Islay |
| PA | PA60 | ISLE OF JURA | Isle of Jura |
| PA | PA61 | ISLE OF COLONSAY | Isle of Colonsay |
| PA | PA62, PA63, PA64, PA65, PA66, PA67, PA68, PA69, PA70, PA71, PA72, PA73, PA74, PA75 | Isle of Mull | Isle of Mull |
| PA | PA76 | ISLE OF IONA | Isle of Iona |
| PA | PA77 | ISLE OF TIREE | Isle of Tiree |
| PA | PA78 | ISLE OF COLL | Isle of Coll |
| PE | PE01 PE1, PE2, PE3, PE4, PE5, PE6, PE7, PE8, PE99 | Peterborough | (Cambridgeshire) |
| PE | PE09 PE9 | STAMFORD | Lincolnshire |
| PE | PE10 | BOURNE | Lincolnshire |
| PE | PE11, PE12 | SPALDING | Lincolnshire |
| PE | PE13, PE14 | Wisbech | Cambridgeshire |
| PE | PE15 | MARCH | Cambridgeshire |
| PE | PE16 | Chatteris | Cambridgeshire |
| PE | PE19 | ST. NEOTS | Cambridgeshire |
| PE | PE20, PE21, PE22 | BOSTON | Lincolnshire |
| PE | PE23 | Spilsby | Lincolnshire |
| PE | PE24, PE25 | Skegness | Lincolnshire |
| PE | PE26, PE28, PE29 | Huntingdon | Cambridgeshire |
| PE | PE27 | ST. IVES | Cambridgeshire |
| PE | PE30, PE31, PE32, PE33, PE34 | King's Lynn | Norfolk |
| PE | PE35 | SANDRINGHAM | Norfolk |
| PE | PE36 | Hunstanton | Norfolk |
| PE | PE37 | Swaffham | Norfolk |
| PE | PE38 | Downham Market | Norfolk |
| PH | PH01 PH1, PH2, PH14 | PERTH | (Perthshire) |
| PH | PH03 PH3, PH4 | Auchterarder | Perthshire |
| PH | PH05 PH5, PH6, PH7 | Crieff | Perthshire |
| PH | PH08 PH8 | Dunkeld | Perthshire |
| PH | PH09 PH9, PH16, PH17, PH18 | Pitlochry | Perthshire |
| PH | PH10, PH11, PH12, PH13 | BLAIRGOWRIE | Perthshire |
| PH | PH15 | ABERFELDY | Perthshire |
| PH | PH19 | Dalwhinnie | Inverness-shire |
| PH | PH20 | Newtonmore | Inverness-shire |
| PH | PH21 | Kingussie | Inverness-shire |
| PH | PH22 | Aviemore | Inverness-shire |
| PH | PH23 | Carrbridge | Inverness-shire |
| PH | PH24 | Boat of Garten | Inverness-shire |
| PH | PH25 | Nethy Bridge | Inverness-shire |
| PH | PH26 | Grantown-on-Spey | Morayshire |
| PH | PH30 | Corrour | Inverness-shire |
| PH | PH31 | ROY BRIDGE | Inverness-shire |
| PH | PH32 | Fort Augustus | Inverness-shire |
| PH | PH33 | FORT WILLIAM | Inverness-shire |
| PH | PH34 | Spean Bridge | Inverness-shire |
| PH | PH35 | Invergarry | Inverness-shire |
| PH | PH36 | Acharacle | Argyll |
| PH | PH37 | Glenfinnan | Inverness-shire |
| PH | PH38 | Lochailort | Inverness-shire |
| PH | PH39 | Arisaig | Inverness-shire |
| PH | PH40, PH41 | Mallaig | Inverness-shire |
| PH | PH42 | ISLE OF EIGG | Isle of Eigg |
| PH | PH43 | ISLE OF RUM | Isle of Rum |
| PH | PH44 | ISLE OF CANNA | Isle of Canna |
| PH | PH49 | Ballachulish | Argyll |
| PH | PH50 | Kinlochleven | Argyll |
| PL | PL01 PL1, PL2, PL3, PL4, PL5, PL6, PL7, PL8, PL9, PL95 | Plymouth | (Devon) |
| PL | PL10, PL11 | Torpoint | Cornwall |
| PL | PL12 | Saltash | Cornwall |
| PL | PL13 | Looe | Cornwall |
| PL | PL14 | Liskeard | Cornwall |
| PL | PL15 | LAUNCESTON | Cornwall |
| PL | PL16 | LIFTON | Devon |
| PL | PL17 | CALLINGTON | Cornwall |
| PL | PL18 | Calstock | Cornwall |
| PL | PL18 | Gunnislake | Cornwall |
| PL | PL19 | TAVISTOCK | Devon |
| PL | PL20 | YELVERTON | Devon |
| PL | PL21 | Ivybridge | Devon |
| PL | PL22 | Lostwithiel | Cornwall |
| PL | PL23 | Fowey | Cornwall |
| PL | PL24 | PAR | Cornwall |
| PL | PL25, PL26 | ST. AUSTELL | Cornwall |
| PL | PL27 | Wadebridge | Cornwall |
| PL | PL28 | Padstow | Cornwall |
| PL | PL29 | Port Isaac | Cornwall |
| PL | PL30, PL31 | Bodmin | Cornwall |
| PL | PL32 | Camelford | Cornwall |
| PL | PL33 | Delabole | Cornwall |
| PL | PL34 | Tintagel | Cornwall |
| PL | PL35 | Boscastle | Cornwall |
| PO | PO01 PO1, PO2, PO3, PO6 | Portsmouth | (Hampshire) |
| PO | PO04 PO4, PO5 | Southsea | Hampshire |
| PO | PO07 PO7, PO8 | Waterlooville | Hampshire |
| PO | PO09 PO9 | Havant | Hampshire |
| PO | PO09 PO9 | Rowland's Castle | Hampshire |
| PO | PO10 | Emsworth | Hampshire |
| PO | PO11 | Hayling Island | Hampshire |
| PO | PO12, PO13 | Gosport | Hampshire |
| PO | PO12, PO13 | Lee-on-the-Solent | Hampshire |
| PO | PO14, PO15, PO16, PO17 | Fareham | Hampshire |
| PO | PO18, PO19, PO20 | Chichester | West Sussex |
| PO | PO21, PO22 | Bognor Regis | West Sussex |
| PO | PO30 | NEWPORT | Isle of Wight |
| PO | PO30, PO41 | YARMOUTH | Isle of Wight |
| PO | PO31 | Cowes | Isle of Wight |
| PO | PO32 | East Cowes | Isle of Wight |
| PO | PO33 | Ryde | Isle of Wight |
| PO | PO34 | SEAVIEW | Isle of Wight |
| PO | PO35 | Bembridge | Isle of Wight |
| PO | PO36 | Sandown | Isle of Wight |
| PO | PO36, PO37 | Shanklin | Isle of Wight |
| PO | PO38 | Ventnor | Isle of Wight |
| PO | PO39 | Totland Bay | Isle of Wight |
| PO | PO40 | FRESHWATER | Isle of Wight |
| PR | PR00 PR0, PR1, PR2, PR3, PR4, PR5, PR11 | PRESTON | (Lancashire) |
| PR | PR06 PR6, PR7 | Chorley | Lancashire |
| PR | PR08 PR8, PR9 | Southport | Merseyside |
| PR | PR25, PR26 | LEYLAND | Lancashire |
| RG | RG01 RG1, RG2, RG4, RG5, RG6, RG7, RG8, RG10, RG19, RG30, RG31 | READING | (Berkshire) |
| RG | RG09 RG9 | Henley-on-Thames | Oxfordshire |
| RG | RG12, RG42 | Bracknell | Berkshire |
| RG | RG14, RG20 | NEWBURY | Berkshire |
| RG | RG17 | Hungerford | Berkshire |
| RG | RG18, RG19 | Thatcham | Berkshire |
| RG | RG21, RG22, RG23, RG24, RG25, RG28 | Basingstoke | Hampshire |
| RG | RG26 | Tadley | Hampshire |
| RG | RG27, RG29 | HOOK | Hampshire |
| RG | RG28 | WHITCHURCH | Hampshire |
| RG | RG40, RG41 | Wokingham | Berkshire |
| RG | RG45 | Crowthorne | Berkshire |
| RH | RH01 RH1 | REDHILL | (Surrey) |
| RH | RH02 RH2 | Reigate | Surrey |
| RH | RH03 RH3, RH4 | Betchworth | Surrey |
| RH | RH04 RH4, RH5 | Dorking | Surrey |
| RH | RH06 RH6 | GATWICK | West Sussex |
| RH | RH06 RH6 | Horley | Surrey |
| RH | RH07 RH7 | LINGFIELD | Surrey |
| RH | RH08 RH8 | Oxted | Surrey |
| RH | RH09 RH9 | Godstone | Surrey |
| RH | RH10, RH11, RH77 | Crawley | West Sussex |
| RH | RH12, RH13 | Horsham | West Sussex |
| RH | RH14 | Billingshurst | West Sussex |
| RH | RH15 | Burgess Hill | West Sussex |
| RH | RH16, RH17 | Haywards Heath | West Sussex |
| RH | RH18 | Forest Row | East Sussex |
| RH | RH19 | East Grinstead | West Sussex |
| RH | RH20 | Pulborough | West Sussex |
| RM | RM01 RM1, RM2, RM3, RM4, RM5, RM6, RM7 | Romford | (Essex) |
| RM | RM08 RM8, RM9, RM10 | Dagenham | Essex |
| RM | RM11, RM12 | Hornchurch | Essex |
| RM | RM13 | RAINHAM | Essex |
| RM | RM14 | Upminster | Essex |
| RM | RM15 | South Ockendon | Essex |
| RM | RM16, RM17, RM20 | Grays | Essex |
| RM | RM18 | Tilbury | Essex |
| RM | RM19 | Purfleet | Essex |
| S | S001 S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S17, S20, S21, S25, S26, S35, S36, S95, S96, S97, S98, S99 | Sheffield | (South Yorkshire) |
| S | S018 S18 | Dronfield | Derbyshire |
| S | S032 S32, S33 | HOPE VALLEY | Derbyshire |
| S | S040 S40, S41, S42, S43, S44, S45, S49 | Chesterfield | Derbyshire |
| S | S060 S60, S61, S62, S63, S65, S66, S97 | Rotherham | South Yorkshire |
| S | S064 S64 | Mexborough | South Yorkshire |
| S | S070 S70, S71, S72, S73, S74, S75 | Barnsley | South Yorkshire |
| S | S080 S80, S81 | Worksop | Nottinghamshire |
| SA | SA01 SA1, SA2, SA3, SA4, SA5, SA6, SA7, SA8, SA9, SA80, SA99 | Swansea | (West Glamorgan) |
| SA | SA10, SA11 | Neath | West Glamorgan |
| SA | SA12, SA13 | Port Talbot | West Glamorgan |
| SA | SA14, SA15 | Llanelli | Dyfed |
| SA | SA16 | Burry Port | Dyfed |
| SA | SA17 | Ferryside | Dyfed |
| SA | SA17 | Kidwelly | Dyfed |
| SA | SA18 | Ammanford | Dyfed |
| SA | SA19 | Llandeilo | Dyfed |
| SA | SA19 | Llangadog | Dyfed |
| SA | SA19 | Llanwrda | Dyfed |
| SA | SA20 | Llandovery | Dyfed |
| SA | SA31, SA32, SA33 | Carmarthen | Dyfed |
| SA | SA34 | Whitland | Dyfed |
| SA | SA35 | Llanfyrnach | Dyfed |
| SA | SA36 | Glogue | Dyfed |
| SA | SA37 | Boncath | Dyfed |
| SA | SA38 | Newcastle Emlyn | Dyfed |
| SA | SA39 | PENCADER | Dyfed |
| SA | SA40 | Llanybydder | Dyfed |
| SA | SA41 | Crymych | Dyfed |
| SA | SA42 | NEWPORT | Dyfed |
| SA | SA43 | CARDIGAN | Dyfed |
| SA | SA44 | Llandysul | Dyfed |
| SA | SA45 | New Quay | Dyfed |
| SA | SA46, SA48 | Aberaeron | Dyfed |
| SA | SA47 | LLANARTH | Dyfed |
| SA | SA48 | Lampeter | Dyfed |
| SA | SA61, SA62 | Haverfordwest | Dyfed |
| SA | SA63 | Clarbeston Road | Dyfed |
| SA | SA64 | Goodwick | Dyfed |
| SA | SA65 | Fishguard | Dyfed |
| SA | SA66 | Clynderwen | Dyfed |
| SA | SA67 | NARBERTH | Dyfed |
| SA | SA68 | Kilgetty | Dyfed |
| SA | SA69 | Saundersfoot | Dyfed |
| SA | SA70 | Tenby | Dyfed |
| SA | SA71, SA72 | PEMBROKE | Dyfed |
| SA | SA72 | Pembroke Dock | Dyfed |
| SA | SA73 | Milford Haven | Dyfed |
| SE | SE01 SE1, SE1P, SE2, SE3, SE4, SE5, SE6, SE7, SE8, SE9, SE10, SE11, SE12, SE13, SE14, SE15, SE16, SE17, SE18, SE19, SE20, SE21, SE22, SE23, SE24, SE25, SE26, SE27, SE28 | LONDON | (London) |
| SG | SG01 SG1, SG2 | Stevenage | Hertfordshire |
| SG | SG03 SG3 | Knebworth | Hertfordshire |
| SG | SG04 SG4, SG5, SG6 | Hitchin | Hertfordshire |
| SG | SG06 SG6 | LETCHWORTH GARDEN CITY | Hertfordshire |
| SG | SG07 SG7 | Baldock | Hertfordshire |
| SG | SG08 SG8 | ROYSTON | Hertfordshire |
| SG | SG09 SG9 | Buntingford | Hertfordshire |
| SG | SG10 | Much Hadham | Hertfordshire |
| SG | SG11, SG12 | WARE | Hertfordshire |
| SG | SG13, SG14 | Hertford | (Hertfordshire) |
| SG | SG15 | Arlesey | Bedfordshire |
| SG | SG16 | Henlow | Bedfordshire |
| SG | SG17 | SHEFFORD | Bedfordshire |
| SG | SG18 | Biggleswade | Bedfordshire |
| SG | SG19 | SANDY | Bedfordshire |
| SK | SK01 SK1, SK2, SK3, SK4, SK5, SK6, SK7, SK12 | Stockport | Cheshire |
| SK | SK08 SK8 | CHEADLE | Cheshire |
| SK | SK09 SK9 | Alderley Edge | Cheshire |
| SK | SK09 SK9 | Wilmslow | Cheshire |
| SK | SK10, SK11 | Macclesfield | Cheshire |
| SK | SK13 | Glossop | Derbyshire |
| SK | SK14 | HYDE | Cheshire |
| SK | SK15 | Stalybridge | Cheshire |
| SK | SK16 | Dukinfield | Cheshire |
| SK | SK17 | Buxton | Derbyshire |
| SK | SK22, SK23 | HIGH PEAK | Derbyshire |
| SL | SL00 SL0 | Iver | Buckinghamshire |
| SL | SL01 SL1, SL2, SL3, SL95 | Slough | (Berkshire) |
| SL | SL04 SL4 | WINDSOR | Berkshire |
| SL | SL05 SL5 | ASCOT | Berkshire |
| SL | SL06 SL6, SL60 | Maidenhead | Berkshire |
| SL | SL07 SL7 | MARLOW | Buckinghamshire |
| SL | SL08 SL8 | BOURNE END | Buckinghamshire |
| SL | SL09 SL9 | Gerrards Cross | Buckinghamshire |
| SM | SM01 SM1, SM2, SM3 | SUTTON | Surrey |
| SM | SM04 SM4 | Morden | Surrey |
| SM | SM05 SM5 | Carshalton | Surrey |
| SM | SM06 SM6 | WALLINGTON | Surrey |
| SM | SM07 SM7 | Banstead | Surrey |
| SN | SN01 SN1, SN2, SN3, SN4, SN5, SN6, SN25, SN26, SN38, SN99 | Swindon | (Wiltshire) |
| SN | SN07 SN7 | Faringdon | Oxfordshire |
| SN | SN08 SN8 | MARLBOROUGH | Wiltshire |
| SN | SN09 SN9 | Pewsey | Wiltshire |
| SN | SN10 | Devizes | Wiltshire |
| SN | SN11 | Calne | Wiltshire |
| SN | SN12 | Melksham | Wiltshire |
| SN | SN13, SN15 | Corsham | Wiltshire |
| SN | SN14, SN15 | Chippenham | Wiltshire |
| SN | SN16 | Malmesbury | Wiltshire |
| SO | SO14, SO15, SO16, SO17, SO18, SO19, SO30, SO31, SO32, SO40, SO45, SO52, SO97 | Southampton | (Hampshire) |
| SO | SO20 | STOCKBRIDGE | Hampshire |
| SO | SO21, SO22, SO23, SO25 | Winchester | Hampshire |
| SO | SO24 | ALRESFORD | Hampshire |
| SO | SO40, SO43 | LYNDHURST | Hampshire |
| SO | SO41 | Lymington | Hampshire |
| SO | SO42 | Brockenhurst | Hampshire |
| SO | SO50, SO53 | Eastleigh | Hampshire |
| SO | SO51 | Romsey | Hampshire |
| SP | SP01 SP1, SP2, SP3, SP4, SP5 | Salisbury | (Wiltshire) |
| SP | SP06 SP6 | Fordingbridge | Hampshire |
| SP | SP07 SP7 | Shaftesbury | Dorset |
| SP | SP08 SP8 | GILLINGHAM | Dorset |
| SP | SP09 SP9 | Tidworth | Wiltshire |
| SP | SP10, SP11 | ANDOVER | Hampshire |
| SR | SR01 SR1, SR2, SR3, SR4, SR5, SR6, SR9 | SUNDERLAND | (Tyne and Wear) |
| SR | SR07 SR7 | Seaham | County Durham |
| SR | SR08 SR8 | Peterlee | County Durham |
| SS | SS00 SS0, SS1 | Westcliff-on-Sea | Essex |
| SS | SS01 SS1, SS2, SS3, SS22, SS99 | Southend-on-Sea | (Essex) |
| SS | SS04 SS4 | Rochford | Essex |
| SS | SS05 SS5 | Hockley | Essex |
| SS | SS06 SS6 | RAYLEIGH | Essex |
| SS | SS07 SS7 | BENFLEET | Essex |
| SS | SS08 SS8 | Canvey Island | Essex |
| SS | SS09 SS9 | Leigh-on-Sea | Essex |
| SS | SS11, SS12 | Wickford | Essex |
| SS | SS13, SS14, SS15, SS16 | Basildon | Essex |
| SS | SS17 | Stanford-le-Hope | Essex |
| ST | ST01 ST1, ST2, ST3, ST4, ST6, ST7, ST8, ST9, ST10, ST11, ST12 | Stoke-on-Trent | (Staffordshire) |
| ST | ST05 ST5, ST55 | NEWCASTLE | Staffordshire |
| ST | ST13 | LEEK | Staffordshire |
| ST | ST14 | Uttoxeter | Staffordshire |
| ST | ST15 | STONE | Staffordshire |
| ST | ST16, ST17, ST18, ST19, ST20, ST21 | Stafford | (Staffordshire) |
| SW | SW01 SW1A, SW1E, SW1H, SW1P, SW1V, SW1W, SW1X, SW1Y, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW95 | LONDON | (London) |
| SY | SY01 SY1, SY2, SY3, SY4, SY5, SY99 | Shrewsbury | (Shropshire) |
| SY | SY06 SY6 | Church Stretton | Shropshire |
| SY | SY07 SY7 | BUCKNELL | Shropshire |
| SY | SY07 SY7 | Craven Arms | Shropshire |
| SY | SY07 SY7 | Lydbury North | Shropshire |
| SY | SY08 SY8 | Ludlow | Shropshire |
| SY | SY09 SY9 | BISHOPS CASTLE | Shropshire |
| SY | SY10, SY11 | Oswestry | Shropshire |
| SY | SY12 | ELLESMERE | Shropshire |
| SY | SY13 | WHITCHURCH | Shropshire |
| SY | SY14 | MALPAS | Cheshire |
| SY | SY15 | MONTGOMERY | Powys |
| SY | SY16 | NEWTOWN | Powys |
| SY | SY17 | Caersws | Powys |
| SY | SY17 | Llandinam | Powys |
| SY | SY18 | Llanidloes | Powys |
| SY | SY19 | Llanbrynmair | Powys |
| SY | SY20 | Machynlleth | Powys |
| SY | SY21 | Welshpool | Powys |
| SY | SY22 | Llanfechain | Powys |
| SY | SY22 | Llanfyllin | Powys |
| SY | SY22 | LLANSANTFFRAID | Powys |
| SY | SY22 | Llanymynech | Powys |
| SY | SY22 | Meifod | Powys |
| SY | SY23 | Aberystwyth | Dyfed |
| SY | SY23 | Llanon | Dyfed |
| SY | SY23 | Llanrhystud | Dyfed |
| SY | SY24 | Borth | Dyfed |
| SY | SY24 | BOW STREET | Dyfed |
| SY | SY24 | TALYBONT | Dyfed |
| SY | SY25 | Tregaron | Dyfed |
| SY | SY25 | Ystrad Meurig | Dyfed |
| TA | TA01 TA1, TA2, TA3, TA4 | Taunton | Somerset |
| TA | TA05 TA5, TA6, TA7 | Bridgwater | Somerset |
| TA | TA08 TA8 | Burnham-on-Sea | Somerset |
| TA | TA09 TA9 | HIGHBRIDGE | Somerset |
| TA | TA10 | Langport | Somerset |
| TA | TA11 | Somerton | Somerset |
| TA | TA12 | Martock | Somerset |
| TA | TA13 | South Petherton | Somerset |
| TA | TA14 | Stoke-sub-Hamdon | Somerset |
| TA | TA15 | Montacute | Somerset |
| TA | TA16 | Merriott | Somerset |
| TA | TA17 | HINTON ST. GEORGE | Somerset |
| TA | TA18 | Crewkerne | Somerset |
| TA | TA19 | Ilminster | Somerset |
| TA | TA20 | CHARD | Somerset |
| TA | TA21 | WELLINGTON | Somerset |
| TA | TA22 | Dulverton | Somerset |
| TA | TA23 | Watchet | Somerset |
| TA | TA24 | Minehead | Somerset |
| TD | TD01 TD1 | Galashiels | Selkirkshire |
| TD | TD02 TD2 | Lauder | Berwickshire |
| TD | TD03 TD3 | GORDON | Berwickshire |
| TD | TD04 TD4 | Earlston | Berwickshire |
| TD | TD05 TD5 | KELSO | Roxburghshire |
| TD | TD06 TD6 | MELROSE | Roxburghshire |
| TD | TD07 TD7 | SELKIRK | (Selkirkshire) |
| TD | TD08 TD8 | Jedburgh | Roxburghshire |
| TD | TD09 TD9 | Hawick | Roxburghshire |
| TD | TD09 TD9 | Newcastleton | Roxburghshire |
| TD | TD10, TD11 | Duns | Berwickshire |
| TD | TD12 | Coldstream | Berwickshire |
| TD | TD12 | Cornhill-on-Tweed | Northumberland |
| TD | TD12 | Mindrum | Northumberland |
| TD | TD13 | Cockburnspath | Berwickshire |
| TD | TD14 | Eyemouth | Berwickshire |
| TD | TD15 | Berwick-upon-Tweed | (Northumberland) |
| TF | TF01 TF1, TF2, TF3, TF4, TF5, TF6, TF7, TF8 | Telford | Shropshire |
| TF | TF09 TF9 | Market Drayton | Shropshire |
| TF | TF10 | NEWPORT | Shropshire |
| TF | TF11 | Shifnal | Shropshire |
| TF | TF12 | Broseley | Shropshire |
| TF | TF13 | Much Wenlock | Shropshire |
| TN | TN01 TN1, TN2, TN3, TN4 | TUNBRIDGE WELLS | Kent |
| TN | TN02 TN2, TN5 | Wadhurst | East Sussex |
| TN | TN06 TN6 | Crowborough | East Sussex |
| TN | TN07 TN7 | Hartfield | East Sussex |
| TN | TN08 TN8 | EDENBRIDGE | Kent |
| TN | TN09 TN9, TN10, TN11, TN12 | Tonbridge | Kent |
| TN | TN13, TN14, TN15 | Sevenoaks | Kent |
| TN | TN16 | Westerham | Kent |
| TN | TN17, TN18 | CRANBROOK | Kent |
| TN | TN19 | Etchingham | East Sussex |
| TN | TN20 | MAYFIELD | East Sussex |
| TN | TN21 | HEATHFIELD | East Sussex |
| TN | TN22 | Uckfield | East Sussex |
| TN | TN23, TN24, TN25, TN26, TN27 | ASHFORD | Kent |
| TN | TN28 | New Romney | Kent |
| TN | TN29 | Romney Marsh | Kent |
| TN | TN30 | Tenterden | Kent |
| TN | TN31 | RYE | East Sussex |
| TN | TN32 | Robertsbridge | East Sussex |
| TN | TN33 | BATTLE | East Sussex |
| TN | TN34, TN35 | Hastings | East Sussex |
| TN | TN36 | Winchelsea | East Sussex |
| TN | TN37, TN38 | ST. LEONARDS-ON-SEA | East Sussex |
| TN | TN39, TN40 | Bexhill-on-Sea | East Sussex |
| TQ | TQ01 TQ1, TQ2 | Torquay | (Devon) |
| TQ | TQ03 TQ3, TQ4 | Paignton | Devon |
| TQ | TQ05 TQ5 | Brixham | Devon |
| TQ | TQ06 TQ6 | DARTMOUTH | Devon |
| TQ | TQ07 TQ7 | Kingsbridge | Devon |
| TQ | TQ08 TQ8 | Salcombe | Devon |
| TQ | TQ09 TQ9 | Totnes | Devon |
| TQ | TQ09 TQ9, TQ10 | South Brent | Devon |
| TQ | TQ11 | Buckfastleigh | Devon |
| TQ | TQ12, TQ13 | Newton Abbot | Devon |
| TQ | TQ14 | Teignmouth | Devon |
| TR | TR01 TR1, TR2, TR3, TR4 | Truro | Cornwall |
| TR | TR05 TR5 | ST. AGNES | Cornwall |
| TR | TR06 TR6 | Perranporth | Cornwall |
| TR | TR07 TR7, TR8 | Newquay | Cornwall |
| TR | TR09 TR9 | ST. COLUMB | Cornwall |
| TR | TR10 | PENRYN | Cornwall |
| TR | TR11 | FALMOUTH | Cornwall |
| TR | TR12, TR13 | Helston | Cornwall |
| TR | TR14 | Camborne | Cornwall |
| TR | TR15, TR16 | Redruth | Cornwall |
| TR | TR17 | Marazion | Cornwall |
| TR | TR18, TR19, TR20 | Penzance | Cornwall |
| TR | TR21, TR22, TR23, TR24, TR25 | Isles of Scilly | (Isles of Scilly) |
| TR | TR26 | ST. IVES | Cornwall |
| TR | TR27 | Hayle | Cornwall |
| TS | TS01 TS1, TS2, TS3, TS4, TS5, TS6, TS7, TS8, TS9 | Middlesbrough | Cleveland |
| TS | TS10, TS11 | Redcar | Cleveland |
| TS | TS12, TS13 | Saltburn-by-the-Sea | Cleveland |
| TS | TS14 | Guisborough | Cleveland |
| TS | TS15 | Yarm | Cleveland |
| TS | TS16, TS17, TS18, TS19, TS20, TS21 | Stockton-on-Tees | Cleveland |
| TS | TS22, TS23 | Billingham | Cleveland |
| TS | TS24, TS25, TS26, TS27 | Hartlepool | Cleveland |
| TS | TS28 | WINGATE | County Durham |
| TS | TS29 | Trimdon Station | County Durham |
| TW | TW01 TW1, TW2 | Twickenham | (Middlesex) |
| TW | TW03 TW3, TW4, TW5, TW6 | Hounslow | (Middlesex) |
| TW | TW07 TW7 | Isleworth | Middlesex |
| TW | TW08 TW8 | Brentford | Middlesex |
| TW | TW09 TW9, TW10 | RICHMOND | Surrey |
| TW | TW11 | Teddington | Middlesex |
| TW | TW12 | HAMPTON | Middlesex |
| TW | TW13, TW14 | Feltham | Middlesex |
| TW | TW15 | ASHFORD | Middlesex |
| TW | TW16 | Sunbury-on-Thames | Middlesex |
| TW | TW17 | Shepperton | Middlesex |
| TW | TW18, TW19 | Staines-upon-Thames | Middlesex |
| TW | TW20 | Egham | Surrey |
| UB | UB01 UB1, UB2, UB3 | Southall | Middlesex |
| UB | UB03 UB3, UB4 | HAYES | Middlesex |
| UB | UB05 UB5 | Northolt | Middlesex |
| UB | UB05 UB5, UB6, UB18 | Greenford | Middlesex |
| UB | UB07 UB7, UB8 | West Drayton | Middlesex |
| UB | UB08 UB8, UB9, UB10, UB11 | Uxbridge | Middlesex |
| W | W001 W1A, W1B, W1C, W1D, W1F, W1G, W1H, W1J, W1K, W1S, W1T, W1U, W1W, W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14 | LONDON | (London) |
| WA | WA01 WA1, WA2, WA3, WA4, WA5, WA55 | Warrington | (Cheshire) |
| WA | WA06 WA6 | Frodsham | Cheshire |
| WA | WA07 WA7 | Runcorn | Cheshire |
| WA | WA08 WA8, WA88 | Widnes | Cheshire |
| WA | WA09 WA9, WA10, WA11 | ST. HELENS | Merseyside |
| WA | WA12 | Newton-le-Willows | Merseyside |
| WA | WA13 | Lymm | Cheshire |
| WA | WA14, WA15 | Altrincham | Cheshire |
| WA | WA16 | Knutsford | Cheshire |
| WC | WC01 WC1A, WC1B, WC1E, WC1H, WC1N, WC1R, WC1V, WC1X, WC2A, WC2B, WC2E, WC2H, WC2N, WC2R | LONDON | (London) |
| WD | WD03 WD3 | Rickmansworth | Hertfordshire |
| WD | WD04 WD4, WD18 | Kings Langley | Hertfordshire |
| WD | WD05 WD5 | Abbots Langley | Hertfordshire |
| WD | WD06 WD6 | Borehamwood | Hertfordshire |
| WD | WD07 WD7 | Radlett | Hertfordshire |
| WD | WD17, WD18, WD19, WD24, WD25, WD99 | Watford | (Hertfordshire) |
| WD | WD23 | Bushey | (Hertfordshire) |
| WF | WF01 WF1, WF2, WF3, WF4, WF90 | Wakefield | West Yorkshire |
| WF | WF05 WF5 | Ossett | West Yorkshire |
| WF | WF06 WF6, WF10 | NORMANTON | West Yorkshire |
| WF | WF07 WF7, WF8, WF9 | Pontefract | West Yorkshire |
| WF | WF10 | Castleford | West Yorkshire |
| WF | WF11 | Knottingley | West Yorkshire |
| WF | WF12, WF13 | Dewsbury | West Yorkshire |
| WF | WF14 | Mirfield | West Yorkshire |
| WF | WF15, WF16 | Liversedge | West Yorkshire |
| WF | WF16 | Heckmondwike | West Yorkshire |
| WF | WF17 | Batley | West Yorkshire |
| WN | WN01 WN1, WN2, WN3, WN4, WN5, WN6, WN8 | Wigan | Lancashire |
| WN | WN07 WN7 | LEIGH | Lancashire |
| WN | WN08 WN8 | Skelmersdale | Lancashire |
| WR | WR01 WR1, WR2, WR3, WR4, WR5, WR6, WR7, WR8, WR78, WR99 | Worcester | (Worcestershire) |
| WR | WR09 WR9 | DROITWICH | Worcestershire |
| WR | WR10 | Pershore | Worcestershire |
| WR | WR11 | Evesham | Worcestershire |
| WR | WR11, WR12 | BROADWAY | Worcestershire |
| WR | WR13, WR14 | MALVERN | Worcestershire |
| WR | WR15 | Tenbury Wells | Worcestershire |
| WS | WS01 WS1, WS2, WS3, WS4, WS5, WS6, WS8, WS9 | Walsall | (West Midlands) |
| WS | WS07 WS7 | Burntwood | Staffordshire |
| WS | WS10 | Wednesbury | West Midlands |
| WS | WS11, WS12 | Cannock | Staffordshire |
| WS | WS13, WS14 | Lichfield | Staffordshire |
| WS | WS15 | Rugeley | Staffordshire |
| WV | WV01 WV1, WV2, WV3, WV4, WV5, WV6, WV7, WV8, WV9, WV10, WV11, WV98 | Wolverhampton | (West Midlands) |
| WV | WV01 WV1, WV12, WV13 | Willenhall | West Midlands |
| WV | WV14 | Bilston | West Midlands |
| WV | WV15, WV16 | Bridgnorth | Shropshire |
| YO | YO01 YO1, YO10, YO19, YO23, YO24, YO26, YO30, YO31, YO32, YO41, YO42, YO43, YO51, YO60, YO61, YO62, YO90, YO91 | York | (North Yorkshire) |
| YO | YO07 YO7 | Thirsk | North Yorkshire |
| YO | YO08 YO8 | Selby | North Yorkshire |
| YO | YO11, YO12, YO13 | SCARBOROUGH | North Yorkshire |
| YO | YO14 | Filey | North Yorkshire |
| YO | YO15, YO16 | Bridlington | North Humberside |
| YO | YO17 | MALTON | North Yorkshire |
| YO | YO18 | PICKERING | North Yorkshire |
| YO | YO21, YO22 | Whitby | North Yorkshire |
| YO | YO25 | Driffield | North Humberside |
| ZE | ZE01 ZE1, ZE2, ZE3 | Shetland | (Shetland Islands) |