Former rolling stock thumb|A northbound 1938 stock train at Harlesden station|alt=A red 1938 Bakerloo line train bound for Harrow & Wealdstone waiting at a platform at Harlesden station with its doors open When opened in 1906, the Bakerloo line was operated by Gate Stock trains, built at Trafford Park, Manchester. To cope with the extension to Queen's Park, 12 extra motor cars of the London Underground 1914 Stock were ordered, ten from Brush of Loughborough and two from the Leeds Forge Company.
Former rolling stock thumb|A northbound 1938 stock train at Harlesden station|alt=A red 1938 Bakerloo line train bound for Harrow & Wealdstone waiting at a platform at Harlesden station with its doors open When opened in 1906, the Bakerloo line was operated by Gate Stock trains, built at Trafford Park Manchester. To cope with the extension to Queen's Park 12 extra motor cars of the London Underground 1914 Stock were ordered, ten from Brush of Loughborough and two from the Leeds Forge Company.