 When seats were redistributed by the Representation of the People Act 1948 the seat was redefined as consisting of five wards by the addition of the Winstanley ward, transferred from Battersea South.However the wards of the borough were redrawn in 1949 prior to the next general election in 1950.Accordingly, changes were made under the House of Commons (Redistribution of Seats) Act 1949.