TfL was created in 2000 and is the integrated body responsible for the Capital's transport system.

Its main role is to implement the Mayor's Transport Strategy for London and manage transport services across the Capital for which the Mayor has responsibility.

These services include:

- London's buses
- London Underground
- Docklands Light Railway (DLR)
- London Overground
- Tramlink
- London River Services
- Victoria Coach Station

TfL also has a number of other responsibilities. These include:

- Managing London's Congestion Charge
- Maintaining 580km of main roads and all of London's traffic lights
- Regulating the city's taxis and private hire trade
- Making London's transport more accessible through coordinating schemes for people with impaired mobility and running Dial-a-Ride alongside the London boroughs Taxicard scheme
- Promoting a range of walking and cycling initiatives