The Bakerloo line opened from Baker Street to Lambeth North in 1906, and trains were stabled and maintained at London Road Depot.

This had been built on the site of a school for the Indigent Blind, and was accessed by a 0.37 miles (0.60 km) branch, leaving the running tunnels between Waterloo and Lambeth North stations.

A branch from Baker Street to Finchley Road was opened on 20 November 1939, and services were extended along the Metropolitan line tracks[2] to terminate at Stanmore.

Neasden Depot became the centre for maintenance of the trains, and London Road was downgraded to becoming stabling sidings.

[3] When plans were made to split the two northern branches of the Bakerloo, with the Stanmore branch becoming part of the Jubilee line, it became necessary to provide new stabling and maintenance facilities for the truncated Bakerloo line, and a new depot was built at Stonebridge Park, which opened in 1979.