| PO Number | Town / Place name | Code
| | F01 | Haywards Heath | |
| Crickfield |
|
| F02 | Bethonia |
|
| F03 | Bagillt |
|
| F04 | Four Crosses | |
| Blaenau Festiniog |
|
| F05 | Rhiwbryfdir |
|
| F06 | Tanygrissian |
|
| F07 | Ilford |
|
| F08 | Barking |
|
| F09 | Holm Rook |
|
| F10 | Chadwell |
|
| F11 | Ramsbottom |
|
| F12 | Batley |
|
| F13 | Wotton, Dorking |
|
| F14 | Askrigg |
|
| F15 | Park End |
|
| F16 | Falfield |
|
| F17 | Alveston |
|
| F18 | Rudgeway |
|
| F19 | Almondsbury |
|
| F20 | Woodford Green |
|
| F21 | Ermington |
|
| F22 | Whitecroft |
|
| F23 | Cains Cross |
|
| F24 | Whitland |
|
| F25 | Llanfairpwllgwyngll |
|
| F26 | Gaerwen |
|
| F27 | Llanerchymedd |
|
| F28 | Rhosybol |
|
| F29 | Nant Gate |
|
| F30 | Charlbury |
|
| F31 | Maesycraigan |
|
| F32 | Bettws | |
| Bettws-y-Coed |
|
| F33 | Ystrad Meurig |
|
| F34 | Llandewi Brefi |
|
| F35 | Tregaron |
|
| F36 | Surbiton |
|
| F37 | Gensing Station Road | |
| Wrotham |
|
| F38 | Stanford-le-Hope |
|
| F39 | Leigh, Chelmsford |
|
| F40 | Grays |
|
| F41 | Purfleet |
|
| F42 | Rainham |
|
| F43 | Hyde, Manchester |
|
| F44 | Denton, Manchester |
|
| F45 | Patricroft, Manchester |
|
| F46 | Shornecliffe Camp |
|
| F47 | St. Mellons |
|
| F48 | Criccieth |
|
| F49 | Dyffryn |
|
| F50 | Croeslon |
|
| F51 | Harlech |
|
| F52 | Llanbedr |
|
| F53 | Penygroes |
|
| F54 | Penrhyn Deudraeth |
|
| F55 | Talysam |
|
| F56 | Alderley Edge |
|
| F57 | Leyburn |
|
| F58 | Ponder's End |
|
| F59 | Talysarnau |
|
| F60 | Llangranog |
|
| F61 | Blaenyfos |
|
| F62 | Kilgerran |
|
| F63 | Boncath |
|
| F64 | Llanmynech |
|
| F65 | Llanfyllyn |
|
| F66 | Sutton Benger |
|
| F67 | Little Haven |
|
| F68 | Rhyd Lewis |
|
| F69 | Savanilla (Barranquilla), Colombia |
|
| F70 | Linton Rhos |
|
| F71 | St. Weonards |
|
| F72 | Woodchester |
|
| F73 | Slade's Bridge |
|
| F74 | Walton-on-the-Naze |
|
| F75 | Cefn Coed |
|
| F76 | Weston-on-the-Naze |
|
| F77 | Lintz Green |
|
| F78 | Tebay |
|
| F79 | Sandy |
|
| F80 | Little London, Jamaica |
|
| F81 | Clark's Town, Jamaica |
|
| F82 | Warcop |
|
| F83 | Arroyo, Puerto Rico |
|
| F84 | Aguadilla, Puerto Rico |
|
| F85 | Mayaguez, Puerto Rico |
|
| F86 | Skewen |
|
| F87 | Smyrna (Izmir) |
|
| F88 | Ponce, Puerto Rico |
|
| F89 | Six Mile Bottom |
|
| F90 | Sharpness Point |
|
| F91 | Northumberland Dock |
|
| F92 | Llantrissant |
|
| F93 | Paddock Wood |
|
| F94 | Ripley, Derby |
|
| F95 | Watson's Hill, Jamaica |
|
| F96 | Shooter's Hill, Jamaica |
|
| F97 | Copse, Jamaica |
|
| F98 | Chester Castle, Jamaica |
|
| F99 | Cap Coch | |
| Abercwmboi, Aberdare |
|