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,
Woodford tube station and Help Points have been added with new public address system. An ‘owl’ has also appeared suspended from the girder. Train frequencies vary throughout the day, but generally operate every 6–11 minutes between 05:22 and 00:49 eastbound to Epping, every 11–25 minutes between 06:48 and 23:37 to Hainault (and beyond) and every 5–10 minutes between 05:24 and 23:36 westbound. London Bus routes 275, 549 and W14 serve the station. Woodford tube station Woodford is a London Underground station in the town of Woodford in the London Borough of Redbridge, East London. The station is on the Central line, between South