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,
Morden tube station to Morden, offering tram services to Sutton via St Helier. Morden tube station Morden is a London Underground station in Morden in the London Borough of Merton. The station is the southern terminus for the Northern line and is the most southerly station on the Underground network. The next station north is . The station is located on London Road (A24), and is in Travelcard Zone 4. Nearby are Morden Hall Park, the Baitul Futuh Mosque and Morden Park. The station was one of the first modernist designs produced for the London Underground by Charles Holden. Its opening in 1926