London City Airport is an international airport in London, United Kingdom. It is located in the Royal Docks in the London Borough of Newham, approximately 6 NM (11 km; 6.9 mi) east of the City of London and a shorter distance east of Canary Wharf. These are the twin centres of London’s financial industry, which is a major user of the airport. The airport was developed by the engineering company Mowlem in 1986–87. In 2016 it was bought by a Canadian-led consortium of Alberta Investment Management Corporation (AIMCo), OMERS, the Ontario Teachers’ Pension Plan and Wren House Infrastructure Management of the Kuwait Investment Authority. London City Airport has a single 1,500-metre (4,900 ft) long runway, and a CAA Public Use Aerodrome Licence (Number P728) that allows flights for the public transport of passengers or for flight training (but only for training necessary for the operation of aircraft at the airport). Only multi-engine, fixed-wing aircraft with special aircraft and aircrew certification to fly 5.5° approaches are allowed to conduct operations at London City Airport. The largest aircraft which can be used at the airport is the Bombardier CS100. London City served over 4.3 million passengers in 2015, an 18% increase compared with 2014. This was the largest percentage growth among London airports, and a record total for London City. It was the fifth-busiest airport in passengers and aircraft movements serving the London area—after Heathrow, Gatwick, Stansted and Luton—and the 13th-busiest in the UK.