London and into the Home Counties with a branch to Heathrow Airport. It is Europe's biggest construction project, with a £15 billion projected cost. London is the centre of the National Rail network, with 70 per cent of rail journeys starting or ending in London. Like suburban rail services, regional and inter-city trains depart from several termini around the city centre, linking London with the rest of Britain including Birmingham, Brighton, Reading, Bristol, Cardiff, Derby, Exeter, Sheffield, Southampton, Leeds, Liverpool, Manchester, Cambridge, Newcastle upon Tyne, Edinburgh and Glasgow. Some international railway services to Continental Europe were operated during the 20th century
London City Airport remotely operated digital control room. Scheduled to be completed in 2018 before being tested for a year, becoming operational in 2019. In 2016, Green Party candidate for the London mayoral election, Siân Berry, proposed the closure and redevelopment of London City airport, citing a number of reasons, including relatively low profit from such a large amount of land, high demand for housing in Greater London and the high levels of pollution generated. Berry also argued that despite more air capacity being needed in the South East of England, the relatively low four million passengers that use London City Airport every