London Underground 1967 Stock in time for the 150th anniversary of the London Underground, in 2013. However, refurbished driving motor car 3186 has now been preserved at the site, in experimental condition with a dark grey rather than white car end, and narrower transverse seating. The 1967 stock was used as the tube train design for the Royal Mint's special £2 coin designs of 2013 marking the 150th anniversary of the London Underground. Motor cars 3079 and 3179 are now part of the Asset Inspection Train, sandwiched between two cars of 1972 stock on either side and without the wrap-around cab windows. London Underground
Circle line (London Underground) with the other London Underground sub-surface lines: the Hammersmith & City line from Hammersmith to just before Aldgate; the Metropolitan line from Baker Street to Aldgate; and the District line from Tower Hill station to Edgware Road station. The line is electrified with a four-rail DC system: a central conductor rail is energised at and a rail outside the running rail at , giving a potential difference of . The running rails are not electrified. Much of the double track railway from the Hammersmith terminus to Westbourne Park station is on a high brick viaduct. East of Westbourne Park the