| Code | Name | Region |
|---|---|---|
| GBTOR | Torquay | |
| GBTRD | Torridon | HLD |
| GBTTK | Tostock | SFK |
| GBTOD | Totland | IOW |
| GBTTS | Totnes | |
| GBTTT | Tottenham | HRY |
| GBTSY | Tisbury | WIL |
| GBTID | Titchfield | HAM |
| GBTVN | Tiverton | |
| GBTSM | Tivetshall Saint Margaret | NFK |
| GBTVD | Tividale | DUD |
| GBTBE | Tobermore | |
| GBTOB | Tobermory | AGB |
| GBTBN | Toberonochy | AGB |
| GBTKW | Tockwith | NYK |
| GBTDB | Todber | DOR |
| GBTDN | Toddington | BDF |
| GBTDM | Todmorden | CLD |
| GBTOF | Toft | LIN |
| GBTFT | Toft | ZET |
| GBTOL | Tollesbury | ESS |
| GBTOM | Tolleshunt D'arcy | ESS |
| GBTMJ | Tolleshunt Major | ESS |
| GBTWT | Tolworth | KTT |
| GBTOA | Tomatin | HLD |
| GBOUT | Tomintoul | MRY |
| GBC6M | Tilbrook | CAM |
| GBTIL | Tilbury | ESS |
| GBTIH | Tile Hill | WAR |
| GBWXY | Tilehurst | WBK |
| GBTFO | Tilford | SRY |
| GBTIT | Tillicoultry | CLK |
| GBTLM | Tillingham | ESS |
| GBTTO | Tillington | HEF |
| GBTSW | Tilsworth | BDF |
| GBTHL | Tilton On The Hill | LEC |
| GBTMP | Timperley | TRF |
| GBTIM | Timsbury | BAS |
| GBTGE | Tingewick | BKM |
| GBTNG | Tingwall | ORK |
| GBTWL | Tingwall | ZET |
| GBTIA | Tintagel | CON |
| GBTPN | Tipton | DUD |
| GBTIP | Tiptree | ESS |
| GBTRE | Tiree | |
| GBTIR | Tirphil | CAY |
| GBTKN | Throckmorton | WOR |
| GBTPP | Thrupp | GLS |
| GBTSS | Thrussington | LEC |
| GBRSL | Thundersley | ESS |