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,
Upminster Bridge tube station been one of the first on the network to operate without a staffed ticket office. Total number of passenger entries and exits at the station during the year is as follows: During 2011 there were 990,000 passenger entries and exits at the station, continuing a trend of growth over the preceding eight years, but lower than neighbouring stations on the route. Upminster Bridge tube station Upminster Bridge is a London Underground station on Upminster Road in the Upminster Bridge neighbourhood of the London Borough of Havering in northeast London, England. The station is on the District line and is the