London Underground infrastructure Tube Programme, investigating replacing the trains for the Bakerloo and Piccadilly lines, is looking for trains with better energy conservation and regenerative braking. The Underground serves 270 stations. Fourteen Underground stations are outside Greater London, of which five (Amersham, Chalfont & Latimer, Chesham, and Chorleywood on the Metropolitan line and Epping on the Central line) are beyond the M25 London orbital motorway. The longest distance between two stations is between Chalfont & Latimer and Chesham on the Metropolitan line. The shortest distance between adjacent stations is the between Leicester Square and Covent Garden on the Piccadilly line. The station furthest
Stations around Shepherd's Bush City Underground station (opened in 1947 to replace the former Wood Lane station) and the 2008 Wood Lane Hammersmith & City line station. Stations around Shepherd's Bush Shepherd's Bush is an area of west London, England, which has been served by a number of London Underground and commuter rail stations over the past 150 years, many of which have had similar names. The names "Shepherd's Bush", "Wood Lane" and "White City" have each been used by several separate stations around the Shepherd's Bush district, following a number of station renamings and closures. The first Shepherd's Bush station was opened in