The station was opened on 30 June 1879 by the
Metropolitan Railway (MR, now the
Metropolitan line) on its extension from its now closed station at
Swiss Cottage (a different station from the current
Swiss Cottage Jubilee line station). The station was rebuilt in 1914 with entrances incorporated into a new
parade of shops. By the mid-1930s, the Metropolitan line was suffering from congestion on its main routes from north-west London, caused by the limited capacity of its tracks between Finchley Road and Baker Street stations. To alleviate this congestion new sections of deep tube tunnels were bored between Finchley Road and Baker Street to carry some of the traffic from the
Stanmore branch and stations south of Wembley Park. These new tunnels opened on 20 November 1939, and from that date Finchley Road station was also served by
Bakerloo line trains running from Baker Street using the new tunnels. The Bakerloo line services were subsequently transferred to the
Jubilee line when that line commenced operation on 1 May 1979. There is a proposal to add a new entrance to the station from the site of the
O2 Centre, as a part of the proposal to redevelop the site for housing. ==Services and layout==