Great Britain Bus Timetable online
National bus and coach public transport information. Includes detailed maps, timetables and airport services.

London Transport
Transportation information for London including London Buses, River Services, Tramlink, Docklands Light Railway, and the London Tube. Site includes detailed system maps, fares and timetables.

Go by Coach
National bus and coach public transport information from National Express. Includes detailed maps, timetables and airport services.

UK Public Transport Information
PTI covers all public transport within the UK including rail, ferry and coach services from the UK to mainland Europe. Interactive maps show you which links you need for the area you're interested in travelling around, or to.