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,
The Grove tube station The Grove tube station The Grove was an authorised underground railway station planned by the Central London Railway (CLR) but never built. It was to be located at the junction of Hammersmith Grove and Goldhawk Road in Shepherd's Bush, in west London. The station was to have been built on the CLR's planned underground extension from Shepherd's Bush to Gunnersbury proposed to parliament in November 1912. The extension was to continue on the London and South Western Railway (L&SWR) surface tracks to Richmond already used by the District Railway (DR). The station would have been between Paddenswick Road to the