|Type:||Transport for London
Hammersmith & City,
Jubilee & Metropolitan
The Metropolitan Railway opened a new branch via St John's Wood eventually reaching beyond Aylesbury and opened new open air platforms. The Hammersmith & City and Circle Lines (the latter a joint Metropolitan & District Railway scheme) were added to Baker Street in the 1870s. Finally the Jubilee Line arrived in 1979 as a split from the Bakerloo Line with a new platform being built and new passageways to allow for cross platform interchange with the Bakerloo .
As can be seen Baker Street is a mixture of open air, sub-surface and deep level railways and hence has a rather complicated layout. Some Metropolitan Line trains terminate at Baker Street with others being able to continue on to Aldgate sharing track with the Hammersmith & City and Circle Line trains.
|Metropolian Line Platform 1|
|Sherlock Holmes on a Bakerloo Line platform|
|Original 1863 platforms 5 and 6|
|Metropolitan Line train prepares to depart for Watford|
|Hammersmith & City line major destinations|
|Bakerloo Line platform|
 Jason Cross, London Underground Guide 2017 (Train Crazy, 2017) p. 100
 Paul Moss, London Underground (Haynes, 2014) p. 14
 Mike Horne, The Bakerloo Line (Capital Transport, 2001) p. 14
 Mike Horne, The Jubilee Line (Capital Transport, 2000) p. 38