Central line (London Underground) Hammersmith (Grove Road) railway station. Authorisation was granted in 1920, but the connection was never built, and the L&SWR tracks were used by the Piccadilly line when it was extended west of Hammersmith in 1932. On 1 July 1933, the Central London Railway and other transport companies in the London area were amalgamated to form the London Passenger Transport Board, generally known as London Transport. The railway was known as the "Central London Line", becoming the "Central line" in 1937. The 1935–40 New Works Programme included a major expansion of the line. To the west new tracks were to be
London–Aylesbury line Vale Parkway has no previous data for the first five years as it only opened in 2008. London–Aylesbury line The London–Aylesbury Line is a railway line between London Marylebone and Aylesbury, going via the Chiltern Hills; it is operated by Chiltern Railways. Nearly half of the line is owned by London Underground, approximately – the total length of the passenger line is about with a freight continuation. The line is part of the former trunk route, the Great Central Main Line. The route towards Aylesbury opened in stages between 1868 and 1899: The Great Central Railway (GCR) decided to build