Baker Street was completed in 1799 and was named after either Sir Edward Baker of Ranston in Dorset who was the owner of an estate in the area, or more probably, William Baker who devel-oped an estate after purchasing land from William Portman (who owned the whole area) in the eighteenth century. The street is, of course, associated with the famous fictional detec¬tive Sherlock Holmes 'who had rooms at 221 b Baker Street'.

The Metropolitan Line station was opened as BAKER STREET on 10 January 1863, the extension' line station opened on 13 April 1868, and the Bakerloo Line station on 10 March 1906.