| Map Colour: | Brown |
| Year Operated: | 1906 |
| Year Opened: | 1906 |
| Year Named: | 1906 |
| Length: | 14.5 Miles (23.2km) |
| Journeys: | 104,000,000 / year |
| Stations: | Harrow & Wealdstone Kenton South Kenton North Wembley Wembley Central Stonebridge Park Harlesden Willesden Junction Kensal Green Queen's Park Kilburn Park Maida Vale Warwick Avenue Paddington Edgware Road Marylebone Baker Street Regent's Park Oxford Circus Piccadilly Circus Charing Cross Embankment Waterloo Lambeth North Elephant & Castle |
The Bakerloo Line runs at both surface and low level and extends from Harrow & Wealdstone to the Elephant & Castle, covering a distance of 14.5 miles. It serves 25 stations and is the 7th busiest line on the Tube.
The Bakerloo name is a concatenation of the original "Baker Street & Waterloo Railway" and was officially adopted in 1906. It originally started out as the Waterloo and Whitehall Railway (1865) and then the Charing Cross and Waterloo Electric Railway (1882), both of which failed.

Image from the Bakerloo Article on Wikipedia.
Work on the line stopped in 1904 after the then financier Whitaker Wright committed suicide after being found guilty of financial misdemeanours. Charles Yerkes of the Underground Electric Railway Company took up the reins and continued the work. The line was extended several times during the 1900s.