Central line (London Underground) that the transport benefits of a Park Royal station on the Central line are not sufficiently high to justify the costs of construction. Central line (London Underground) The Central line is a London Underground line that runs through central London, from , Essex, in the north-east to and in the west. Coloured red on the Tube map, the line serves 49 stations over , which makes it the longest Tube line. It is also one of only two lines on the Underground network to cross the Greater London boundary, the other being the Metropolitan line. One of London's deep-level railways,
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