Islington although the building still stands. Angel tube station on Islington High Street has the longest escalator on the London Underground system, at 318 steps. In 2006 a Norwegian man made headlines after skiing down the escalator at the station. Islington features extensively in modern English literature and culture: The area is well served by bus routes, with a major bus interchange located near Angel tube station. Red route and residents' parking restrictions apply throughout the area. The Civil Aviation Authority has its head office in the CAA House in Islington. Grade II* English Heritage list three Grade II* listed buildings
North End tube station on 22 June 1907, running through the abandoned station. The uncompleted platforms and lower passageways remain, with access to the tracks. During World War II these were used to store secret archives with access only available from the cabs of passing service trains. During the Cold War a shaft was dug down to the lower passageways and the abandoned station became part of the London Underground's civil defence preparations. As the tunnels were the deepest in the network it was an ideal site. The role of the control centre was to manage the emergency floodgates placed throughout the tube network