Heathrow (Terminal 5 pictured) is the busiest airport

Transport is one of the four main areas of policy administered by the Mayor of London,[186] however the mayor's financial control does not extend to the longer distance rail network that enters London. In 2007 he assumed responsibility for some local lines, which now form the London Overground network, adding to the existing responsibility for the London Underground, trams and buses. The public transport network is administered by Transport for London (TfL) and is one of the most extensive in the world. Cycling is an increasingly popular way to get around London. The London Cycling Campaign lobbies for better provision.[187]
The lines that formed the London Underground, as well as trams and buses, became part of an integrated transport system in 1933 when the London Passenger Transport Board (LPTB) or London Transport was created. Transport for London (TfL), is now the statutory corporation responsible for most aspects of the transport system in Greater London, and is run by a board and a commissioner appointed by the Mayor of London.[188]
Air


Heathrow (Terminal 5 pictured) is the busiest airport in the world for international traffic.[189][190]
London is a major international air transport hub with the largest city airspace in the world. Eight airports use the word London in their name, but most traffic passes through six of these. London Heathrow Airport, in Hillingdon, West London, is the busiest airport in the world for international traffic, and is the major hub of the nation's flag carrier, British Airways.[191] In March 2008 its fifth terminal was opened.[192] There were plans for a third runway and a sixth terminal however these were cancelled by the Coalition Government on 12 May 2010.[193] In September 2011 a personal rapid transit system was opened at Heathrow to connect to a nearby car park.[194]
Similar traffic, with the addition of some low-cost short-haul flights, is also handled at Gatwick Airport, located south of London in West Sussex.[195]
Stansted Airport, situated north east of London in Essex, is the main UK hub for Ryanair and Luton Airport to the north of London in Bedfordshire, caters mostly for low-cost short-haul flights.[196][197] London City Airport, the smallest and most central airport, is focused on business travellers, with a mixture of full service short-haul scheduled flights and considerable business jet traffic.[198]
London Southend Airport, east of London in Essex, is a smaller, regional airport that mainly caters for low-cost short-haul flights. It recently went through a large redevelopment project including a brand new terminal, extended runway and a new railway station offering fast links into the capital. EasyJet have a base at the airport