Transport in London in Battersea is used by private helicopters. There are also Biggin Hill and Farnborough Airfield. Croydon Airport was originally London's main airport, but was replaced by Heathrow, and closed in 1959. An airfield at Lydd has been rebranded London Ashford, but currently have little traffic. In August 2009, Oxford Airport, some 95 km from London's City Centre, re-branded itself London Oxford Airport in a controversial move, while Kent International was briefly called London Manston; it is 120 km from London. In addition, RAF Brize Norton with direct flights to the Falkland Islands is less than two hours away by car.
London Underground S Stock (ex-Metropolitan Railway) used with two 1925-built prototype driving motors. In 1925, two driving motor cars were built as prototypes for what would later become the T stock. In the London Passenger Transport Board numbering scheme, they became 2598 and 2599. After the trailer cars were withdrawn from service in the 1940s, the two driving motor cars remained in service on the East London Line, being used with a 1923-built control trailer. These three cars were withdrawn in 1950. London Underground S Stock (ex-Metropolitan Railway) S stock is the designation given to one train of eight cars by London Underground in the 1930s.