The constituency, officially the Balham and Tooting Division of the Parliamentary Borough of Wandsworth, was created by the Representation of the People Act 1918.
The 1918 Act had the principal aim of reducing the growing malapportionment due to electorate growth in geographical areas coupled with the subsidiary aim of realigning constituency boundaries so as to largely correspond with units of local government units (as created in 1889 and 1900).
The new seat was one of five divisions of the Metropolitan Borough of Wandsworth in the parliamentary County of London.
[1] The seat had previously formed part of the single-member Wandsworth constituency, created in 1885.
[3] The constituency was surrounded by Wandsworth Central to the north-west, Battersea South to the north, Clapham to the north-east, Streatham to the east and south-east, Mitcham to the south and Wimbledon to the west.