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,
King's Cross St Pancras tube station King's Cross St Pancras tube station King's Cross St Pancras (formerly King's Cross) is a London Underground station on Euston Road in the Borough of Camden, Central London. It serves King's Cross and main line stations in fare zone 1, and is an interchange between six Underground lines. The station was one of the first to open on the network; as of , it is the station on the network for passenger entrances and exits combined. The station opened in 1863 along with the Metropolitan line, subsequently catering for the Hammersmith & City and Circle lines. It was expanded in