| # | AB | Aberdeen | Scotland
|
|---|
| 1 | AL | St Albans | England |
| 2 | B | Birmingham | England |
| 3 | BA | Bath | England |
| 4 | BB | Blackburn | England |
| 5 | BD | Bradford | England |
| 6 | BH | Bournemouth | England |
| 7 | BL | Bolton | England |
| 8 | BN | Brighton | England |
| 9 | BR | Bromley | England |
| 10 | BS | Bristol | England |
| 11 | BT | Belfast | Northern Ireland |
| 12 | CA | Carlisle | England |
| 13 | CB | Cambridge | England |
| 14 | CF | Cardiff | Wales |
| 15 | CH | Chester | England or Wales: see below |
| 16 | CM | Chelmsford | England |
| 17 | CO | Colchester | England |
| 18 | CR | Croydon | England |
| 19 | CT | Canterbury | England |
| 20 | CV | Coventry | England |
| 21 | CW | Crewe | England |
| 22 | DA | Dartford | England |
| 23 | DD | Dundee | Scotland |
| 24 | DE | Derby | England |
| 25 | DG | Dumfries and Galloway | Scotland |
| 26 | DH | Durham | England |
| 27 | DL | Darlington | England |
| 28 | DN | Doncaster | England |
| 29 | DT | Dorchester | England |
| 30 | DY | Dudley | England |
| 31 | E | London East | England |
| 32 | EC | London East Central | England |
| 33 | EH | Edinburgh | Scotland |
| 34 | EN | Enfield | England |
| 35 | EX | Exeter | England |
| 36 | FK | Falkirk | Scotland |
| 37 | FY | Blackpool (Fylde) | England |
| 38 | G | Glasgow | Scotland |
| 39 | GL | Gloucester | England |
| 40 | GU | Guildford | England |
| 41 | GY | Guernsey | Channel Islands |
| 42 | HA | Harrow | England |
| 43 | HD | Huddersfield | England |
| 44 | HG | Harrogate | England |
| 45 | HP | Hemel Hempstead | England |
| 46 | HR | Hereford | England or Wales: see below |
| 47 | HS | Hebrides (recoding of PA8#) because of unacceptably high level of manual miscodes to PA8, introduced in 1995. | Scotland |
| 48 | HU | Hull, Kingston upon | England |
| 49 | HX | Halifax | England |
| 50 | IG | Ilford | England |
| 51 | IM | Isle of Man | Isle of Man |
| 52 | IP | Ipswich | England |
| 53 | IV | Inverness | Scotland |
| 54 | JE | Jersey | Channel Islands |
| 55 | KA | Kilmarnock | Scotland |
| 56 | KT | Kingston-upon-Thames | England |
| 57 | KW | Kirkwall | Scotland |
| 58 | KY | Kirkcaldy | Scotland |
| 59 | L | Liverpool | England |
| 60 | LA | Lancaster (Lancashire) | England |
| 61 | LD | Llandridnod Wells | Wales or England: see below |
| 62 | LE | Leicester | England |
| 63 | LL | Llandudno | Wales or England: see below |
| 64 | LN | Lincoln | England |
| 65 | LS | Leeds | England |
| 66 | LU | Luton | England |
| 67 | M | Manchester | England |
| 68 | ME | Medway | England |
| 69 | MK | Milton Keynes | England |
| 70 | ML | Motherwell | Scotland |
| 71 | N | London North | England |
| 72 | NE | Newcastle-upon-Tyne | England |
| 73 | NG | Nottingham | England |
| 74 | NN | Northampton | England |
| 75 | NP | Newport | Wales or England: see below |
| 76 | NR | Norwich | England |
| 77 | NW | London North West | England |
| 78 | OL | Oldham | England |
| 79 | OX | Oxford | England |
| 80 | PA | Paisley | Scotland |
| 81 | PE | Peterborough | England |
| 82 | PH | Perth | Scotland |
| 83 | PL | Plymouth | England |
| 84 | PO | Portsmouth | England |
| 85 | PR | Preston | England |
| 86 | RG | Reading | England |
| 87 | RH | Redhill | England |
| 88 | RM | Romford | England |
| 89 | S | Sheffield | England |
| 90 | SA | Swansea | Wales |
| 91 | SE | London South East | England |
| 92 | SG | Stevenage | England |
| 93 | SK | Stockport | England |
| 94 | SL | Slough | England |
| 95 | SM | Sutton, Surrey | England |
| 96 | SN | Swindon | England |
| 97 | SO | Southampton | England |
| 98 | SP | Salisbury (Salisbury Plain) | England |
| 99 | SR | Sunderland | England |
| 100 | SS | Southend-on-Sea | England |
| 101 | ST | Stoke-on-Trent | England |
| 102 | SW | London South West | England |
| 103 | SY | Shrewsbury | England or Wales: see below |
| 104 | TA | Taunton | England |
| 105 | TD | Galashiels (Tweed) | Scotland or England: see below |
| 106 | TF | Telford | England |
| 107 | TN | Tonbridge | England |
| 108 | TQ | Torquay | England |
| 109 | TR | Truro | England |
| 110 | TS | Cleveland (Teesside) | England |
| 111 | TW | Twickenham | England |
| 112 | UB | Southall (Uxbridge) | England |
| 113 | W | London West | England |
| 114 | WA | Warrington | England |
| 115 | WC | London West Central | England |
| 116 | WD | Watford | England |
| 117 | WF | Wakefield | England |
| 118 | WN | Wigan | England |
| 119 | WR | Worcester | England |
| 120 | WS | Walsall | England |
| 121 | WV | Wolverhampton | England |
| 122 | YO | York | England |
| 123 | ZE | Lerwick (Shetland) | Scotland |
| 124 | CH1 | England, except for the Welsh town of Sealand | |
| 125 | CH2-CH3 | England | |
| 126 | CH4 | England, except for the Welsh towns of Bretton, Broughton, Penyffordd, Rhos-y-brwyner, and Saltney |
| 127 | CH5-CH8 | Wales |
| 128 | CH41-CH49 | England |
| 129 | CH60-CH63 | England |
| 130 | HR1-HR2 | England |
| 131 | HR3 | England, except for the Welsh towns of Bronydd, Clyro, Cwmbach, Glasbury, Hay-on-Wye, Llanigon, and Llowes |
| 132 | HR4 | England |
| 133 | HR5 | England, except for the Welsh towns of Bryngwyn, Colva, Dolleycanney, Gladestry, Gwaithla, Hengoed, Michaelchurch-on-Arrow, Newchurch, and Veaullt |
| 134 | HR6-HR9 | England |
| 135 | LD1-LD6 | Wales |
| 136 | LD7 | Wales, except the English towns of Five Turnings, Llanfair Waterdine, Panputon, Quabbs, and Stowe |
| 137 | LD8 | Wales, except the English towns of Byton, Combe, Combe Moor, Kinsham, Knill, Nash, Rodd, and Stapleton |
| 138 | LL11-LL13 | Wales |
| 139 | LL14 | Wales, except the English towns of Bronygarth and Gledrid |
| 140 | LL15-LL78 | Wales |
| 141 | NP1-NP4 | Wales |
| 142 | NP5 | Wales, except for the English towns of Llanrothal and Welsh Newton |
| 143 | NP7-NP23 | Wales |
| 144 | NP26 | Wales, except for the English towns of Beachley, Boughspring, Brockweir, Sedbury, Stroat, Tidenham, Tidenham Chase, Tutshill, Wibdon, and Woodcroft |
| 145 | NP44 | Wales |
| 146 | SY1-SY4 | England |
| 147 | SY5 | England, except for the Welsh towns of Crewgreen, Criggion, and The Marsh |
| 148 | SY6-SY9 | England |
| 149 | SY10 | England, except for the Welsh towns of Abertridwr, Alltforgan, Bwlch-y-ddar, Cedig, Cefn-coch, Hirnant, Llangedwyn, Llangynog, Llanrhaeadr-ym-Mochnant, Llansilin, Llanwddyn, Lledrod, Moelfre, Pen-y-bont, Pen-y-bont-fawr, Pencraig, Penisarcwn, Pennant Melangell, Pentre, Pentrefelin, Penygarnedd, Rhiwargor, Rhiwlas, Tan-y-pistyll, Tyn-y-ffridd |
| 150 | SY11-SY12 | England |
| 151 | SY13 | England, except for the Welsh towns of Arowry, Bettisfield, Bronington, Eglwys Cross, Hanmer, Horseman=92s Green, and The Chequer |
| 152 | SY14 | England, except for the Welsh towns of Higher Wych and Tallarn Green |
| 153 | SY15 | Wales, except for the English towns of Chirbury, Middleton, Pentreheyling, Priestweston, Rorrington, Woodmoor, Wotherton |
| 154 | SY16-20 | Wales |
| 155 | SY21 | Wales, except for the English town of Marton |
| 156 | SY22 | Wales, except for the English towns of Crosslanes, Maesbrook, Melverley, and Melverley Green |
| 157 | SY23-SY25 | Wales |
| 158 | TD1-TD11 | Scotland |
| 159 | TD12 | England, except for the Scottish towns of Birgham, Coldstream, Leitholm, Lennel, Orange Lane, Simprim, and Swintonmill |
| 160 | TD13-TD14 | Scotland |
| 161 | TD15 | England, except for the Scottish towns of Fishwick, Foulden, Horndean, Hutton, Ladykirk, Lamberton, Mordington, Paxton, and Upsettlington.
|
