A separate station of the same name but served by the Circle, District and Hammersmith & City lines is nearby, to the south of Marylebone Road.

The BS&WR had parliamentary approval to continue the line to Paddington station, but the approved route, which curved under the main line station and ended under the junction of Sussex Gardens and Sussex Place on a south-easterly heading, was not suitable for the company's plan to extend west or north-west from Paddington.

[8] In 1908 the BS&WR considered a joint scheme with the North West London Railway (NWLR) to build a tube line from Edgware Road station to Cricklewood via Kilburn.

[9] In 1911, permission was received to construct a tightly curved 890-metre (2,920 ft) long extension to Paddington which ended heading north-west under the main line station.

In 1983, London Transport proposed to close the station on the basis that the passenger lifts, which at the time were 77 years old, needed to be replaced at a cost of more than £3 million.