| PO Number | Town / Place name | Code |
|---|---|---|
| H01 | Cenarth | |
| H02 | Maesllyn | |
| H03 | Tunstall | |
| H04 | Orford | |
| H05 | Dymock | |
| H06 | School Green | |
| Freshwater | ||
| Freshwater Station | ||
| H07 | South Tottenham | |
| Ynysmudw | ||
| H08 | Stanley, Durham | |
| H09 | Pevensey | |
| H10 | Tram Inn | |
| H11 | Birchgrove | |
| H12 | Caldicott | |
| H13 | Rockingham | |
| H14 | Llanbadam Fawr | |
| H15 | Wivenhoe | |
| H16 | Brotton | |
| H17 | Carlin How | |
| H18 | Easington, Yorks | |
| H19 | Staithes | |
| H20 | Loftus | |
| H21 | Longfield, Kent | |
| H22 | Seaton | |
| H23 | Hassocks, Sussex | |
| H24 | Aberllechan | |
| H25 | Wheatley | |
| H26 | Hinderwell | |
| H27 | Pensarn | |
| H28 | Abinger Hammer | |
| H29 | Bures | |
| H30 | Pocklington | |
| H31 | Wawnllwyd | |
| H32 | Llansawell | |
| H33 | Llandderfel | |
| H34 | Waterlooville | |
| H35 | Mersham | |
| H36 | Lydd | |
| H37 | Horley Station | |
| H38 | Shoeburyness | |
| H39 | Great Horkesley | |
| H40 | Llanwddyn Reservoir | |
| H41 | Willesboro' | |
| H42 | Llantwit Vardre | |
| H43 | Coalville | |
| H44 | Whitefield | |
| H45 | Connah's Quay | |
| H46 | Carlton Iron Works | |
| H47 | Sedgefield | |
| H48 | West Cornforth | |
| H49 | Wingate Station | |
| H50 | Sidcup | |
| H51 | Heathfield | |
| H52 | Church | |
| H53 | Nelson-in-Marsden | |
| Nelson | ||
| H54 | Heathfield Station | |
| H55 | Ingleton | |
| H56 | Greenfield | |
| H57 | St. Dogmael's | |
| H58 | Northiam | |
| H59 | Wittersham | |
| H60 | Brandon Colliery | |
| H61 | Stantonbury | |
| H62 | Snaith | |
| H63 | Clivetown | |
| H64 | Seaham Harbour | |
| H65 | Velindre, Carmarthen | |
| H66 | Greatham | |
| H67 | Seaton Carew | |
| H68 | Purton | |
| H69 | Stratton St. Margaret | |
| H70 | Bramley, Yorks | |
| H71 | Harrow Weald | |
| H72 | Llanbedie | |
| H73 | Wealdstone | |
| H74 | Parkstone | |
| H75 | Hotham | |
| H76 | North Newbald | |
| H77 | Adlingfleet | |
| H78 | Garthorpe | |
| H79 | Ousefleet | |
| H80 | Nunthorpe | |
| H81 | Reedness | |
| H82 | Whitgift | |
| H83 | Hook, Yorks | |
| H84 | Sancton | |
| H85 | Longwathby | |
| H86 | Kirkoswald, Cumb | |
| H87 | Laxonby | |
| H88 | Dedham | |
| H89 | Llanfaelog | |
| H90 | Abercarne | |
| H91 | Rhosgoch | |
| H92 | Baildon | |
| H93 | Saltaire | |
| H94 | Llanfinangel | |
| H95 | Hylton | |
| H96 | Talsyam | |
| H97 | Chelsfield | |
| H98 | Glanamman | |
| H99 | Thames Ditton |