To the north of the station, a motive power depot was built with a large roundhouse in 1882, with a second in 1893. With this was built a large marshalling yard and, in later years, LMS Garratts would be seen with their massive trains of coal from Toton in the Nottinghamshire and Derbyshire coalfields. Between 1899 and 1926, a number of proposals were put forward to build an underground railway along the Edgware Road from Central London to Cricklewood via Kilburn, and envisaged the construction of a Tube station at Cricklewood. None of the schemes succeeded and the line was never built.