London Underground 1992 Stock & City line, which until 1994 was part of the national railway network, and became their Class 482. When this line passed to London Underground at the start of the process to privatise British Rail on 1 April 1994, these units also passed to London Underground. The vehicles are essentially identical to those used on the Central line; the main difference being that trip-cocks are used for protection instead of ATO/ATP. Transport for London and Metronet closed the Waterloo & City line for five months from April to September 2006 to allow major upgrade work on the tunnels and rolling
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