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,
Camden Town tube station Camden Town tube station Camden Town is a London Underground station on the Northern line. It is a major junction for the line and one of the busiest stations on the London Underground network. It is particularly busy with visitors to the Camden markets at weekends, and is exit-only on Sundays to prevent overcrowding. Northbound, the next stations are on the Edgware branch and on the High Barnet branch. Southbound, the next stations are on the Charing Cross branch and on the Bank branch. The station is in Travelcard Zone 2. The station was first proposed as part of the