what types of transportation can be found in london
Public transport services are dominated by the executive agency for transport in London: Transport for London (TfL). TfL controls the majority of public transport, including the Underground, Buses, Tramlink, the Docklands Light Railway, London River Services and the London Overground. Other rail services are either franchised to train operating companies by the national Department for Transport (DfT). TfL also controls most major roads in London, but not minor roads. In addition, there are several independent airports operating in London, including Heathrow, the busiest airport in the United Kingdom.