| Code | Name | Region |
|---|---|---|
| GBTHO | Thormanby | NYK |
| GBTOT | Thornaby On Tees | STT |
| GBTBH | Thornborough | BKM |
| GBTHB | Thornbridge | DBY |
| GBTBB | Thornbury | SGC |
| GBTOE | Thorne | DNC |
| GBTDD | Teddington | RIC |
| GBTEE | Teesport | RCC |
| GBMME | Teesside | MDB |
| GBTNM | Teignmouth | |
| GBTEF | Telford | SHR |
| GBTEM | Temple Sowerby | |
| GBTPC | Templecombe | SOM |
| GBENB | Tenbury | WOR |
| GBTYW | Tenbury Wells | WOR |
| GBTEN | Tenby (dinbych-y-pysgod) | PEM |
| GBRIG | Tendring | OXF |
| GBTTD | Tenterden | KEN |
| GBTET | Tetbury | GLS |
| GBTTL | Tetney Terminal | LIN |
| GBTTW | Tetsworth | OXF |
| GBTVH | Teversham | CAM |
| GBTEB | Tewkesbury | GLS |
| GBTYH | Teynham | KEN |
| GBKHA | Thakeham | WSX |
| GBTHE | Thame | OXF |
| GBTKL | Tankersley | BNS |
| GBTWH | Tanworth | WAR |
| GBTLW | Taplow | BKM |
| GBTAR | Tarbert | AGB |
| GBTAB | Tarbert | ELS |
| GBTLT | Tarleton | LAN |
| GBTPL | Tarporley | CHW |
| GBTRV | Tarvin | CHW |
| GBTTF | Tatsfield | SRY |
| GBTTH | Tattenhall | CHW |
| GBTAU | Taunton | SOM |
| GBTAV | Taverham | NFK |
| GBTAS | Tavistock | |
| GBTWO | Tawstock | DEV |
| GBTAI | Tayinloan | AGB |
| GBTYU | Taynuilt | AGB |
| GBTAY | Tayport | FIF |
| GBTLI | Tayvallich | |
| GBTVY | Team Valley/gateshead | GAT |
| GBTBA | Tebay | CMA |
| GBSYM | Symbister | ZET |
| GBSYX | Symington | SAY |
| GBSYS | Syston | LEC |
| GBSYW | Sywell | NTH |