Metropolitan and St John's Wood Railway Company Metropolitan Railway Company

The Metropolitan and St John's Wood Railway Company was a subsidiary of the Metropolitan Railway Company. It carried out the construction of a northern extension to the Metropolitan Railway's central London line. An extension between Baker Street and Swiss Cottage was opened in 1868. The line was continued to West Hampstead and Willesden Green in 1879, Harrow in 1880 and Pinner in 1885. The Metropolitan and St John's Wood Railway Company merged with the Metropolitan Railway Company in 1882. The line extensions are now part of the London Underground's Metropolitan Line.