| Code | Name | Region |
|---|---|---|
| GBTCF | Thurcroft | ROT |
| GBTRB | Thurlby | |
| GBTLH | Thurleigh | BDF |
| GBTLS | Thurlstone | YOR |
| GBTMS | Thurmaston | LEC |
| GBFUU | Thurnscoe | BNS |
| GBTRK | Thurrock | ESS |
| GBTHR | Thurso | HLD |
| GBTHK | Thurston | SFK |
| GBTBS | Tibshelf | DBY |
| GBTCH | Ticehurst | ESX |
| GBTKM | Tickenham | NSM |
| GBTIC | Tickhill | DNC |
| GBTSL | Tideswell | DBY |
| GB8IE | Tiffield | NTH |
| GBTIG | Tighnabruaich | AGB |
| GBTHY | Thorney | PTE |
| GBTRM | Thornham | NFK |
| GBTRL | Thornhill | DBY |
| GBNLE | Thornley | DUR |
| GBTRT | Thornton | ERY |
| GBTHN | Thornton | LAN |
| GBTH7 | Thornton Curtis | NLN |
| GBTHH | Thornton Heath | CRY |
| GBTDA | Thornton Le Dale | NYK |
| GBJTC | Thornton-cleveleys | LAN |
| GBTWM | Thornwood Common | HRT |
| GBTRP | Thorpe | SRY |
| GBTPB | Thorpe Bay | ESS |
| GBTSA | Thorpe Saint Andrew | NFK |
| GBNSS | Thorpeness | |
| GBTGN | Thorrington | ESS |
| GBTPS | Thrapston | NTH |
| GBTPD | Threapwood | WRX |
| GBTHC | Three Legged Cross | DOR |
| GBTKG | Throcking | HRT |
| GBTDT | Thames Ditton | SRY |
| GBTHS | Thames Haven | ESS |
| GBMMD | Thamesmead | GRE |
| GBTHP | Thamesport | KEN |
| GBTST | Tharston | NFK |
| GBTHA | Thatcham | WBK |
| GBTXD | Thaxted | ESS |
| GBFTI | The Forties | DBY |
| GBTAL | Theale | WBK |
| GBTFD | Thetford | NFK |
| GBTSK | Thirsk | NYK |
| GBTHF | Thistle Field | |
| GBZDF | Thorganby | LIN |
| GBZDG | Thorganby | NYK |