 Route 42 commenced operation on 25 July 1912 as a daily route between Finsbury Park station and Clapton Pond via Seven Sisters Road, Amhurst Park and Upper Clapton Road.On 26 August 1912, it was extended from Clapton to Tower of London via Hackney, Whitechapel Road, Aldgate and Minories.From 14 April 1913 it was extended on Mondays to Saturdays from Tower of London to Camberwell Green via Tower Bridge, Old Kent Road and Albany Road.