It is on the Edgware branch of the Northern line, between Hampstead and Chalk Farm stations, and is in Travelcard Zone 2.

The platforms can also be reached by stairs; there are 219 steps according to the sign in the station, which is equivalent to a 15 story building.

[8] The station was designed by Leslie Green in "Modern Style" and has his familiar facade of ox-blood faience with five round arched windows.

[10] Belsize Park is one of eight London Underground stations which have deep-level air-raid shelters underneath them.

[11] The shelter was constructed in World War II to provide safe accommodation for service personnel.