London Underground and the mechanisms are regularly degreased to lower the potential for fires. The only wooden escalator not to be replaced was at Greenford station, which remained until October 2015 when TfL replaced it with the first incline lift on the UK transport network. There are 426 escalators on the London Underground system and the longest, at , is at Angel. The shortest, at Stratford, gives a vertical rise of . There are 184 lifts, and numbers have increased in recent years because of investment making tube stations accessible. Over 28 stations will have lifts installed over the next 10 years,
Piccadilly Circus tube station major overhaul of the existing buildings. However, there will only be a stop at Piccadilly Circus if the Chelsea-Hackney Line is part of the London Underground network and not part of the National Rail network. This is the same situation with many stations on the proposed route in Central London. London Buses routes 3, 6, 12, 13, 14, 19, 22, 38, 88, 94, 139, 159 and 453 and night routes N3, N15, N18, N19, N22, N29, N38, N97, N109 and N136 serves the station. Piccadilly Circus tube station Piccadilly Circus is a London Underground station located directly beneath Piccadilly Circus