G
- Galloway European
- George Edwards and Son
- GHA Coaches
- Glasgow Citybus
- Glenvale Transport
- Glossopdale Bus Company
- GM Buses
- Go North East
- Go South Coast
- Go West Midlands
- Go-Ahead London
- Godfrey Burley Group
- Gower Explorer
- GRT Group
- Grampian Regional Transport
- Green Line Coaches
- Green Triangle Buses
- Grey-Green
- Greyhound Motors
- GWR road motor services
Read more about this topic: List Of Bus Operators Of The United Kingdom