| PO Number | Town / Place name | Code
| | D01 | Holborn Hill, Ulverston | |
| Millom |
|
| D02 | Grange-over-Sands |
|
| D03 | Seaford, Lewes |
|
| D04 | Dowlais |
|
| D05 | Chislehurst | |
| Chislehurst Station Office | |
| Lower Camden Chislehurst |
|
| D06 | Erwood |
|
| D07 | Llanuwchllyn | |
| Yalding |
|
| D08 | Llyswen |
|
| D09 | Rhydymaen |
|
| D10 | Gretna |
|
| D11 | Framlingham |
|
| D12 | Burgh |
|
| D13 | Beckenham |
|
| D14 | Singapore, Straits Settlements |
|
| D15 | Aldborough | |
| Aldeburgh |
|
| D16 | Leiston |
|
| D17 | Penang, Straits Settlements |
|
| D18 | Newbridge-on-Wye |
|
| D19 | Burnopfield | |
| Bowers Gifford |
|
| D20 | Blackhill |
|
| D21 | Richmond, Surrey |
|
| D22 | Ciudad Bolivar, Venezuela |
|
| D23 | Sutton, Surrey |
|
| D24 | Mitcham, Surrey |
|
| D25 | Llandyssil |
|
| D26 | Spanish Mail Packets, Danish W. Indies |
|
| D27 | Amoy, China |
|
| D28 | Kiung Chow, China |
|
| D29 | Hangkow, China |
|
| D30 | Hiogo, Japan |
|
| D31 | Pool, Cornwall | |
| Carn Brea |
|
| D32 | Llanvihhangelar-Arth |
|
| D33 | Newport, Essex |
|
| D34 | Waterfoot |
|
| D35 | Talybont | |
| Talbont on Usk |
|
| D36 | Hopkinstown |
|
| D37 | Coggershall |
|
| D38 | Earl's Colne |
|
| D39 | Bourton-on-the-Water |
|
| D40 | Dafen |
|
| D41 | Padiham |
|
| D42 | Blaenellecha |
|
| D43 | Llanarth |
|
| D44 | Potter's Bar |
|
| D45 | Baydon |
|
| D46 | Cockfield |
|
| D47 | Polymechia, Cyprus |
|
| D48 | HQ Camp, Nicosia, Cyprus |
|
| D49 | Treharris |
|
| D50 | Wroxhall |
|
| D51 | Peel, IOM |
|
| D52 | Figure Four |
|
| D53 | Llanilar |
|
| D54 | Crosswood |
|
| D55 | Clydach Vale |
|
| D56 | Olney |
|
| D57 | Bute Docks B.O. Cardiff |
|
| D58 | Harrington |
|
| D59 | Marske-by-the-Sea |
|
| D60 | The Valley |
|
| D61 | Barrasford |
|
| D62 | Southwick, Sussex |
|
| D63 | Nawton |
|
| D64 | Kirby Moorside |
|
| D65 | Helmsley | |
| Yoxford | |
| Pisagua |
|
| D66 | Gillingham |
|
| D67 | Dublin & Cork Rly. Post Office |
|
| D68 | Dublin & Cork Rly. Post Office |
|
| D69 | Castle Eden Colliery |
|
| D70 | Castle Eden Station |
|
| D71 | Wingate |
|
| D72 | Trimdon Grange |
|
| D73 | Coxhoe Trimdon Grange |
|
| D74 | Pisco, Peru |
|
| D75 | Harrow |
|
| D76 | Buckhurst Hill |
|
| D77 | Loughton |
|
| D78 | Brancepeth |
|
| D79 | Sandy | |
| Twyford |
|
| D80 | Potton |
|
| D81 | Bures |
|
| D82 | Llwyngwril |
|
| D83 | Blaina |
|
| D84 | Beaufort |
|
| D85 | Ebbw Vale |
|
| D86 | Nantyglo |
|
| D87 | Iquique, Peru |
|
| D88 | Linton |
|
| D89 | Haverhill |
|
| D90 | Long Melford |
|
| D91 | Lavenham |
|
| D92 | Clare |
|
| D93 | Shefford |
|
| D94 | Woodford Bridge |
|
| D95 | Yoxford | |
| Peasenhall |
|
| D96 | West Drayton |
|
| D97 | Carshalton |
|
| D98 | Pentre |
|
| D99 | Hakin |
|