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,
Marylebone station London fare zone 1. Access is via escalators from the main line station concourse which houses the Underground station's ticket office. Until 2004, a wooden escalator led into the station, one of the last on the London Underground system that had not been replaced as a consequence of the King's Cross fire in 1987. Marylebone has direct connections with just a single Tube line, unlike many other London termini such as and . There is no direct interchange with the Circle line, which predates the station by more than 30 years and bypasses it to the south. The nearest stations