| PO Number | Town / Place name | Code
| | J01 | Englefield Green |
|
| J02 | Butterknowle |
|
| J03 | Trefnant |
|
| J04 | Rhyddlan |
|
| J05 | Talgarig |
|
| J06 | Upper Brynamman |
|
| J07 | Oxted |
|
| J08 | Limpsfield |
|
| J09 | Wellington College |
|
| J10 | Langley Park Station |
|
| J11 | Armley |
|
| J12 | Birstall |
|
| J13 | Morley |
|
| J14 | Pudsey |
|
| J15 | Jackfield |
|
| J16 | Farnborough, Kent |
|
| J17 | Gt. Harwood |
|
| J18 | Brierfield |
|
| J19 | Stoke-under-Ham |
|
| J20 | Hinstock |
|
| J21 | Tycroes |
|
| J22 | Westerham |
|
| J23 | Long Compton |
|
| J24 | Green Street, Kent |
|
| J25 | Addlestone, Kent |
|
| J26 | Upper Teddington |
|
| J27 | Bissoe |
|
| J28 | Stamford Bridge |
|
| J29 | Llandrillo |
|
| J30 | Tywyn | |
| Deganwy | |
| Llandudno |
|
| J31 | Bethersden |
|
| J32 | East Molesey |
|
| J33 | Willingdon |
|
| J34 | Cranleigh |
|
| J35 | Burnopfield |
|
| J36 | Takeley |
|
| J37 | Bramley, Surrey |
|
| J38 | Llanuwchllyn |
|
| J39 | East Cowton |
|
| J40 | Great Ayton |
|
| J41 | Great Smeaton |
|
| J42 | Newby Wiske |
|
| J43 | South Otterington |
|
| J44 | Thornton-le-Moor |
|
| J45 | Newton | |
| Southborough |
|
| J46 | Virginia Water |
|
| J47 | Newbridge, Mon |
|
| J48 | Wickford |
|
| J49 | Ripley, Surrey |
|
| J50 | Ewell |
|
| J51 | West Tanfield |
|
| J52 | Broadstone |
|
| J53 | Llangwyllog |
|
| J54 | Carnforth and Whitehaven T.P.O. |
|
| J55 | Wrafton |
|
| J56 | Braunton |
|
| J57 | Morthoe Garland |
|
| J58 | Abersychan |
|
| J59 | Wallsend |
|
| J60 | Bodorgan |
|
| J61 | Whiteley |
|
| J62 | Bisley |
|
| J63 | Wallington |
|
| J64 | Sudbury, Middx |
|
| J65 | Camberley |
|
| J66 | Ramsey, Hunts |
|
| J67 | Chapel-en-le-Frith |
|
| J68 | Wool |
|
| J69 | Boscombe |
|
| J70 | Shapperton |
|
| J71 | Hockley |
|
| J72 | Cambo |
|
| J73 | Eastleigh |
|
| J74 | Totton |
|
| J75 | Blackwater, Hants |
|
| J76 | Horwich |
|
| J77 | Marton, Yorks |
|
| J78 | Medomsley |
|
| J79 | Thatcham |
|
| J80 | Beenham |
|
| J81 | Woolhampton |
|
| J82 | Wadhurst Station | |
| Wadhurst Station Rd. |
|
| J83 | Datchet |
|
| J84 | Ossett |
|
| J85 | Church Lane, Old Charlton |
|
| J86 | Woolwich Road, Old Charlton |
|
| J87 | Cloughfold |
|
| J88 | Haslingdean |
|
| J89 | Summerseat |
|
| J90 | Luddenden |
|
| J91 | Luddendenfoot |
|
| J92 | Mytholmroyd |
|
| J93 | Yeadon |
|
| J94 | Ingleby Greenhow |
|
| J95 | Bradford, Lancs |
|
| J96 | Bodenham |
|
| J97 | Willington Quay |
|
| J98 | Eston |
|
| J99 | Normanby, Middlesborough |
|