| Code | Name | Region |
|---|---|---|
| GBKGW | Kingswinford | STS |
| GBKSW | Kingswood | GLS |
| GBKIN | Kingswood | SRY |
| GBKTN | Kington | WOR |
| GBKGU | Kingussie | HLD |
| GBKOH | Kinloch, Rum | HLD |
| GBKBE | Kinlochbervie | HLD |
| GBKNC | Kinlochleven | AGB |
| GBKNL | Kinloss | MRY |
| GBKBY | Kinmel | DEN |
| GBKNY | Kinnerley | SHR |
| GBKNR | Kinross | PKN |
| GBKSL | Kinsley | ERY |
| GBKOR | Kintore | ABD |
| GBKNV | Kinver | STS |
| GBKIP | Kippford | DGY |
| GBREE | Kings Bromley | STS |
| GBKGC | King's Cliffe | NTH |
| GBKCO | Kings Coughton | WAR |
| GBKNH | Kings Heath | BIR |
| GBKGL | Kings Langley | HRT |
| GBKLN | King's Lynn | NFK |
| GBKGN | Kings Norton | BIR |
| GBK2N | Kingsbarns | FIF |
| GBKIB | Kingsbridge | DEV |
| GBKGB | Kingsbury | LND |
| GBKGY | Kingsbury | WAR |
| GBKDN | Kingsdown | KEN |
| GBXLY | Kingsley | CHW |
| GBKGS | Kingsley | HAM |
| GBKNK | Kingsnorth | KEN |
| GBKNG | Kingsteignton | |
| GBKNS | Kingston | STS |
| GBKBP | Kingston Bagpuize | OXF |
| GBZBQ | Kingston Blount | BKM |
| GBK8S | Kingston Saint Mary | SOM |
| GBKPS | Killroot Power Station Jetty | ANT |
| GBKYH | Killyleagh | |
| GBKMN | Kilmacolm | IVC |
| GBKMK | Kilmarnock | EAY |
| GBKGO | Kilmington | WIL |
| GBTKV | Kilmore | HLD |
| GBKDW | Kilndown | KEN |
| GBKII | Kilninian | AGB |
| GBXKL | Kilrea | CLR |
| GBKLR | Kilroot | ANT |
| GBKLS | Kilsby | NTH |
| GBKLT | Kilsyth | NLK |
| GBKWG | Kilwinning | NAY |
| GBKBO | Kimbolton | CAM |