| PO Number | Town / Place name | Code
| | 001 | Pensford |
|
| 002 | Ulceby |
|
| 003 | Weobley |
|
| 004 | Redcar |
|
| 005 | Corsham |
|
| 006 | Templecloud |
|
| 007 | Brough, Yorks |
|
| 008 | Clutton |
|
| 009 | Farrington Gurney |
|
| 010 | Copplestone |
|
| 011 | Hallatrow |
|
| 012 | Highampton |
|
| 013 | North Tawton |
|
| 014 | Witheridge |
|
| 015 | Milford Junction | |
| South Milford |
|
| 016 | Brockenhurst |
|
| 017 | Upper Clevedon | |
| Rainham, Kent |
|
| 018 | Egham |
|
| 019 | New Maldon |
|
| 020 | Lower Clevedon | |
| Clevedon |
|
| 021 | St. Just |
|
| 022 | Ripley, Yorks |
|
| 023 | Farnboro' | |
| Farnboro' Station |
|
| 024 | Stonehouse, Glos |
|
| 025 | Bletchley Station |
|
| 026 | Southend, Essex |
|
| 027 | Southend-on-Sea | |
| Houghton-le-Spring |
|
| 028 | Ramsey, Hunts | |
| St. Keyne |
|
| 029 | West Hartlepool |
|
| 030 | Tremadoc |
|
| 031 | Port Madoc |
|
| 032 | Festiniog |
|
| 033 | Tanybwlch |
|
| 034 | Smethwick |
|
| 035 | Oldbury |
|
| 036 | Ramsey, IOM |
|
| 037 | Castletown, IOM |
|
| 038 | Chathill |
|
| 039 | Willenhall |
|
| 040 | Whittlesea | |
| Duloe |
|
| 041 | Crowland | |
| Kirkbythore |
|
| 042 | Eggesford | |
| Sandplace |
|
| 043 | Yatton Keynell | |
| Looe |
|
| 044 | Laycock | |
| Polperro |
|
| 045 | Sutton Benger | |
| Temple Sowerby |
|
| 046 | Aldershot Camp | |
| Trawsfynydd | |
| Greaseborough |
|
| 047 | Crewe Station |
|
| 048 | Normanton | |
| Normanton Station Office | |
| Normanton Station |
|
| 049 | Paddington Station |
|
| 050 | Bampton |
|
| 051 | Tickhill |
|
| 052 | Shotley Bridge |
|
| 053 | Heckmondwike |
|
| 054 | Farnworth |
|
| 055 | Beaford |
|
| 056 | Bow |
|
| 057 | Brandis Corner |
|
| 058 | Bridgestowe |
|
| 059 | Chulmleigh |
|
| 060 | Newent |
|
| 061 | Eynsford |
|
| 062 | Dolton |
|
| 063 | Exbourne |
|
| 064 | Lew Down |
|
| 065 | Lifton |
|
| 066 | Capel Bangor |
|
| 067 | Morchard Bishop |
|
| 068 | Ponterwydd |
|
| 069 | Devil's Bridge |
|
| 070 | Sampford Courtenay |
|
| 071 | Wembworthy |
|
| 072 | Winkleigh |
|
| 073 | Waltham |
|
| 074 | Probus |
|
| 075 | Newton in Carmel | |
| Rhydyfelin |
|
| 076 | Knottingley |
|
| 077 | Aston on Clun |
|
| 078 | Brampton Brian |
|
| 079 | Bromfield |
|
| 080 | Clun |
|
| 081 | Castletown Portland |
|
| 082 | Leintwardine |
|
| 083 | Little Brampton |
|
| 084 | Lydbury North |
|
| 085 | Craven Arms |
|
| 086 | Fortunes Well |
|
| 087 | Goginan |
|
| 088 | Sunninghill |
|
| 089 | Usk |
|
| 090 | Winstantow |
|
| 091 | Kirkby Lonsdale |
|
| 092 | Harwell | |
| Crowthorne |
|
| 093 | Crowthorne |
|
| 094 | Steventon |
|
| 095 | Drayton, Berks |
|
| 096 | Colwyn Bay |
|
| 097 | Shiplake | |
| Twyford | |
| Mitcheldean |
|
| 098 | Platres, Cyprus |
|
| 099 | Whitchurch, Hants |
|