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,
South Wimbledon tube station UERL's own architect, Stanley Heaps. Built with a shop to each side, the modernist design takes the form of a double-height box clad in white Portland stone with a three-part glazed screen on the front façade divided by columns of which the capitals are three-dimensional versions of the Underground roundel. The central panel of the screen contains a large version of the roundel. The station is a Grade II listed building. The station is the southernmost station on the London Underground network which has platforms in tunnels (Morden tube station is further south, but is an open cutting rather than