Nearby attractions include Regent's Park, Lord's Cricket Ground, the Sherlock Holmes Museum and Madame Tussauds.

[15] A bill was published in November 1852[16] and in January 1853 the directors held their first meeting and appointed John Fowler as its engineer.

[35] The railway was planned to run entirely underground from Marylebone[36] to Elephant & Castle[37] via Baker Street and Waterloo[35] and was approved in 1900.

[49] On 1 July 1933, the MR and BS&WR amalgamated with other Underground railways, tramway companies and bus operators to form the London Passenger Transport Board (LPTB), and the MR became the Metropolitan line, while the BS&WR became the Bakerloo line of London Transport.

[8][58] The circle line was initially formed by the combination of the MR and DR routes, which were between Edgware Road and South Kensington, Edgware Road and Aldgate via King's Cross St Pancras, South Kensington and Mansion House,[59][60] and a joint railway between Mansion House and Aldgate.

They are situated on a roughly east-to-west alignment beneath Marylebone Road, spanning approximately the stretch between Upper Baker Street and Allsop Place.

[72] Since Swiss Cottage and St John's Wood have replaced the former three stations between Finchley Road and Baker Street on the Metropolitan line, it takes an average of five and a half minutes to travel between them.

[74][75] The former Chiltern Court Restaurant above the station is still in use today as the Metropolitan Bar, part of the Wetherspoons pub chain.

[49] The rest of the block, known as Chiltern Court and completed by the Metropolitan Railway's in-house architect, Charles Walter Clark in 1929, houses residential apartments.

Plaques of the Metropolitan Railway's coat of arms along the platform and old plans and photographs depict the station which has changed remarkably little in over a hundred and fifty years.

[77] Restoration work in the 1980s on the oldest portions of Baker Street station brought it back to something similar to its 1863 appearance.

The Metropolitan line platforms 1 to 4 were largely the result of the station's rebuild in the 1920s to cater for the increase in traffic on its outer suburban routes.

Today, the basic layout remains the same with platforms 2 and 3 being through tracks for City services to Aldgate from Amersham, Chesham, Uxbridge or Watford and vice versa flanked by terminal platforms 1 and 4 which are the domain of services from Baker Street to Amersham, Chesham, Uxbridge or Watford and vice versa.

The northern end of the platforms is in a cutting being surrounded by Chiltern Court and Selbie House the latter of which houses Baker Street control centre responsible for signalling the Metropolitan line from Preston Road to Aldgate, as well as the Circle and Hammersmith & City lines between Baker Street and Aldgate.

The southern end of the platforms are situated in a cut and cover tunnel which runs towards Great Portland Street.

[78] The Bakerloo line uses platforms 8 and 9,[citation needed] which date from 10 March 1906 when the Baker Street & Waterloo railway opened between here and Lambeth North (then called Kennington Road).

By the mid-1930s, the Metropolitan line was suffering from congestion caused by the limited capacity of its tracks between Baker Street and Finchley Road stations.

The design of the Jubilee line platforms at Baker Street has changed little since being opened, with illustrations depicting famous scenes from Sherlock Holmes cases.

[83] TfL applied for planning permission and listed building consent for providing access to platforms 5 and 6 on 1 October 2008, but the application was subsequently withdrawn.

(The part of the proposed scheme to provide step-free access to platforms 1–4 is within TfL's permitted development rights, and so does not require planning permission.

[85] In order to accommodate the new, longer S stock trains, which started operating Metropolitan line services in August 2010, platforms 1 and 4 have been extended.

Southbound trains usually terminate at Stratford and North Greenwich although additional turn back points are provided at Green Park, Waterloo, London Bridge, Canary Wharf and West Ham.

Northbound trains usually terminate at Stanmore, Wembley Park and Willesden Green although additional turn back points are available at Finchley Road, West Hampstead and Neasden.

[69] The off-peak service in trains per hour is:[94] The station is served by London Buses day and night routes.