| Code | Name | Region |
|---|---|---|
| GBHFI | Holmfield | CLD |
| GBHLR | Holmfirth | KIR |
| GBHMK | Holmrook | CMA |
| GBHWO | Holsworthy | |
| GBHLT | Holt | NFK |
| GBHOW | Holt | WIL |
| GBZBL | Hilton | SHR |
| GBHDB | Hilton/derby | DBY |
| GBHIL | Hinckley | LEC |
| GBHHD | Hindhead | SRY |
| GBHIY | Hindley | WGN |
| GBHEG | Hindley Green | WGN |
| GBHGM | Hingham | NFK |
| GBHIO | Hinton Saint George | SOM |
| GBHNX | Hinxworth | HRT |
| GBHPR | Hipperholme | ERY |
| GBHWU | Hirwaun | RCT |
| GBHIS | Histon | CAM |
| GBHCN | Hitchin | HRT |
| GBHXN | Hixon | STS |
| GBHKY | Hockley | BIR |
| GBHCY | Hockley | ESS |
| GBHKW | Hockwold Cum Wilton | NFK |
| GBHON | Hoddesdon | HRT |
| GBHGP | Hogsthorpe | LIN |
| GBHOL | Holbeach | LIN |
| GBGIH | High Roding | ESS |
| GBHIR | High Throston | HPL |
| GBHWY | High Wycombe | BKM |
| GBHGH | Higham | KEN |
| GBHGF | Higham Ferrers | NTH |
| GBHIG | Highbridge | SOM |
| GBHCF | Highcliffe | DOR |
| GBHGG | Highgate/london | CMD |
| GBHPJ | Highpeak Junction | DBY |
| GBHGW | Hightown | SFT |
| GBHGO | Highworth | SWD |
| GBHNB | Hildenborough | KEN |
| GBHID | Hillend | FIF |
| GBHLL | Hillingdon | HIL |
| GBHTN | Hillington | GLG |
| GBHBH | Hillsborough | LSB |
| GBHLB | Hillsborough | SHF |
| GBHMN | Hilmarton | WIL |
| GBHZA | Hilsea | POR |
| GBTNN | Hilton | CAM |
| GBHYB | Heswall | WRL |
| GBHEE | Hethel | LEC |
| GBHGI | Hethersgill | CMA |
| GBHTT | Hetton | NYK |