T
- Tanat Valley Coaches
- Teamdeck
- Tellings-Golden Miller
- Thames Transit
- Thames Travel
- Thames Valley Traction
- Thamesdown Transport
- Thamesway Buses
- The Big Bus Company
- The Big Lemon
- The Heritage Fleet
- The Kings Ferry
- The Original Tour
- Thomas Tilling
- Tillingbourne Bus Company
- Timebus Travel
- TM Travel
- Tourist Group
- Transdev
- Transdev Blazefield
- Transdev London
- Transdev Yellow Buses
- Transdev York
- Translink (Northern Ireland)
- Trathens
- Travel de Courcey
- Travel London
- Travel Merry Hill
- Travel Surrey
- Travel Your Bus
- TrawsCambria
- Trent Barton
- Truronian
- Trustline
Read more about this topic: List Of Bus Operators Of The United Kingdom