The M&StJWR had received authorisation in July 1864 to construct a railway from the Metropolitan Railway's (MR's) station at Baker Street to the London and North Western Railway's station at Finchley Road (now Finchley Road and Frognal). The line was to be partly funded and operated by the MR.Шаблон:Sfn The station was to be located in what at the time was partly open countryside. Before construction had begun, an extension was authorised in 1865 to the village of Hampstead.[1][2]
The M&StJWR struggled financially and the plans for the line to Finchley Road and Hampstead were reduced in scope so that it opened in 1868 as a single-track line only as far as Swiss Cottage and the continuation north was postponed. The plan was formally abandoned in 1870.Шаблон:Sfn A Шаблон:Convert section of tunnel built north of Swiss Cottage station in readiness for the continuation towards Hampstead was used for the MR's later extension to the north-west.Шаблон:Sfn and a different station of the same name was built further south on Finchley Road. A short length of tunnel on the original alignment was unused.Шаблон:Sfn This is still visible today when travelling on a southbound Metropolitan line service.
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