| Code | Name | Region |
|---|---|---|
| GBHLA | Henley | WSX |
| GBHIA | Henley-in-arden | WAR |
| GBHEN | Henley-on-thames | OXF |
| GBHNA | Henllan | CMN |
| GBHYY | Henllys | MON |
| GBHEW | Henlow | CBF |
| GBHBG | Hebden Bridge | CLD |
| GBHKG | Heckington | LIN |
| GBHEK | Heckmondwike | KIR |
| GBHH3 | Hedenham | NFK |
| GBHGE | Hedge End | HAM |
| GBXHD | Hednesford | |
| GBHXX | Hedon | |
| GBHEI | Heighington | DUR |
| GBXHE | Hele | DEV |
| GBHLN | Helensburgh | AGB |
| GBHDR | Helford River | CON |
| GBHBY | Hellaby | ROT |
| GBHDE | Hellesdon | NFK |
| GBHD2 | Hellidon | NTH |
| GBGLY | Hellingly | ESX |
| GBHLM | Helmdon | NTH |
| GBHMA | Helmsdale | HLD |
| GBHSO | Helmshore | LAN |
| GBEML | Helmsley | NYK |
| GBHSB | Helsby | CHW |
| GBHAY | Hayle | CON |
| GBHYG | Hayling Island | HAM |
| GBHYS | Haynes | CBF |
| GBXHW | Hay-on-wye | POW |
| GBHAH | Haywards Heath | WSX |
| GBHZG | Hazel Grove | SKP |
| GBHZO | Hazelwood | DBY |
| GBHZL | Hazlemere | BKM |
| GBHEA | Heacham | NFK |
| GBHED | Headcorn | KEN |
| GBHDG | Headington | OXF |
| GBHYE | Headley | HAM |
| GBHEO | Headley Down | HAM |
| GBHNR | Heanor | DBY |
| GBHF5 | Heathfield | ESX |
| GBHHF | Heathfield | SOM |
| GBHHH | Heathhall | DGY |
| GBLHR | Heathrow Apt/london | HIL |
| GBHEQ | Heaton | LAN |
| GBHEB | Hebburn | STY |
| GBHAX | Hauxton | CAM |
| GBHAV | Havant | HAM |
| GBHVR | Haverfordwest | PEM |
| GBHAL | Haverhill | SFK |