| Code | Name | Region |
|---|---|---|
| GBGBK | Great Bookham | SRY |
| GBGBX | Great Braxted | ESS |
| GBGTR | Great Brickhill | BKM |
| GBGTB | Great Bridge | DEV |
| GBGBF | Great Bridgeford | STS |
| GBGBG | Great Broughton | NYK |
| GBGXH | Goxhill | LIN |
| GBGOX | Goxhill | NEL |
| GBGOH | Goxhill | NLN |
| GBGAE | Graemsay | ORK |
| GBGFM | Graffham | WSX |
| GBXGR | Grampound | CON |
| GBGNB | Granby | NTT |
| GBGBH | Grandborough | WAR |
| GBXGO | Grange Over Sands | |
| GBGGU | Grangemounth | FAL |
| GBGRG | Grangemouth | FAL |
| GBGSD | Grange-over-sands | CMA |
| GBGWN | Grangetown | RCC |
| GBGRA | Gransden | CAM |
| GBGTM | Grantham | LIN |
| GBGRN | Granton | EDH |
| GBGOY | Grantown-on-spey | HLD |
| GBGZT | Grassington | NYK |
| GBGV2 | Graveley | HRT |
| GBGVS | Gravesend | KEN |
| GBGBS | Goring-by-sea | WSX |
| GBGRL | Gorleston-on-sea | NFK |
| GBGOR | Gorran Haven | CON |
| GBGOQ | Gorseinon | SWA |
| GBOTG | Gorton | MAN |
| GBGO6 | Gosberton | LIN |
| GBGSF | Gosfield | ESS |
| GBGFT | Gosforth | CMA |
| GBGFH | Gosforth | NET |
| GBGOS | Gosport | HAM |
| GBXGT | Gotham | NTT |
| GBGOU | Goudhurst | KEN |
| GBGUD | Gourdon | ABD |
| GBGUR | Gourock | IVC |
| GBGVA | Govan | GLG |
| GBGVO | Goveton | DEV |
| GBGIV | Govilon | MON |
| GBWWL | Gowdall | YOR |
| GBGOW | Gowerton | SWA |
| GBHXL | Goxhill | ERY |
| GBGO7 | Goathurst | SOM |
| GBGBW | Gobowen | SHR |
| GBGOD | Godalming | SRY |
| GBGDM | Godmanchester | CAM |