 As the borough of West Ham had only 120,586 electors on 15 October 1946, the relevant date for the subsequent Boundary Commission review, the borough was only entitled to two Members of Parliament; North and South divisions were recommended.As a consequence Silvertown was abolished as a separate constituency by the Representation of the People Act 1948 and went out of existence at the 1950 general election.Silvertown was based on the two wards of Custom House and Silvertown (based either side of the Royal Victoria Dock), and Tidal Basin, which was to its north-west.