Transport for London owner of London Overground
Transport for London (TfL) is a local government body responsible for most of the transport network in London, United Kingdom.TfL has responsibility for multiple rail networks including the London Underground and Docklands Light Railway, as well as London's buses, taxis, principal road routes, cycling provision, trams, and river services. It does not control all National Rail services in London, although it is responsible for London Overground and Elizabeth line services. The underlying services are provided by a mixture of wholly owned subsidiary companies (principally London Underground), by private sector franchisees (the remaining rail services, trams and most buses) and by licensees (some buses, taxis and river services). TfL was also responsible, jointly with the national Department for Transport (DfT), for commissioning the construction of the new Crossrail Project and is now responsible for franchising its operation as the Elizabeth line.In 2019–20, TfL had a budget of £10.3 billion, 47% of which came from fares. The rest came from grants, mainly from the Greater London Authority (33%), borrowing (8%), congestion charging and other income (12%). Direct central government funding for operations ceased in 2018. In 2020, during the COVID-19 pandemic in the United Kingdom, TfL sought urgent government support as fare revenues dropped 90%, and proposed near 40% cuts in capital expenditure.Organisation
TfL is controlled by a board whose members are appointed by the Mayor of London, a position held by Sadiq Khan since May 2016.  The Commissioner of Transport for London reports to the Board and leads a management team with individual functional responsibilities.
The body is organised in two main directorates and corporate services, each with responsibility for different aspects and modes of transport. The two main directorates are:London Underground, responsible for running London's underground rail network, commonly known as the tube, and managing the provision of maintenance services by the private sector. This network is sub-divided into different service delivery units:
London Underground
Deep Tube: Bakerloo, Central, Victoria, Waterloo & City, Jubilee, Northern and Piccadilly lines.
SSL (Sub Surface Lines): Metropolitan, District, Circle and Hammersmith & City lines.
Elizabeth line, a high-frequency hybrid urban–suburban rail service on dedicated infrastructure in central London (built as part of the Crossrail Project); and on National Rail lines to the east and west of the city. Operation is undertaken by MTR Elizabeth line, a private-sector concessionaire, and maintenance by Network Rail.
Surface Transport, consisting of:
Docklands Light Railway (DLR): an automatically driven light metro network in East and South London, although actual operation and maintenance is undertaken by a private-sector concessionaire (a joint venture of Keolis and Amey).
London Buses, responsible for managing the red bus network throughout London and branded services including East London Transit, largely by contracting services to various private sector bus operators. Incorporating CentreComm, London Buses Command & Control Centre, a 24-hour Emergency Control Centre based in Southwark.
London Dial-a-Ride, which provides community transport services throughout London.
London Overground, which consists of certain suburban National Rail services within London. Operation is undertaken by Arriva Rail London, a private-sector concessionaire, and maintenance by Network Rail.
London River Services, responsible for licensing and co-ordinating passenger services on the River Thames within London.
London Streets, responsible for the management of London's strategic road network.
London Trams, responsible for managing London's tram network, by contracting to private sector operators. At present the only tram system is Tramlink in South London, contracted to FirstGroup, but others are proposed.
London congestion charge, a fee charged on most cars and motor vehicles being driven within the Congestion Charge Zone in Central London.
Public Carriage Office, responsible for licensing the famous black cab taxis and private hire vehicles.
Victoria Coach Station, which owns and operates London's principal terminal for long-distance bus and coach services.
"Delivery Planning" which promotes cycling in London, including the construction of Cycle Superhighways.
"Special Projects Team"  manages the contract with Serco for the Santander Cycles bike rental scheme.
Walking, which promotes better pedestrian access and better access for walking in London.
London Road Safety Unit, which promotes safer roads through advertising and road safety measure.
Community Safety, Enforcement and Policing, responsible for tackling fare evasion on buses, delivering policing services that tackle crime and disorder on public transport in co-operation with the Metropolitan Police Service's Transport Operational Command Unit (TOCU) and the British Transport Police.
Traffic Enforcement, responsible for enforcing traffic and parking regulations on the red routes.
Freight Unit, which has developed the "London Freight Plan" and is involved with setting up and supporting a number of Freight Quality Partnerships covering key areas of London.