 Wednesbury Borough Constituency now comprised the Borough of Wednesbury and Urban District of Darlaston, to which were added the two urban districts of Wednesfield and Willenhall from the abolished seat of Wolverhampton East.The final adjustment made was as part of a periodic review under the House of Commons (Redistribution of Seats) Act 1949.This came into effect at the 1955 general election, with Wednesfield transferred to the neighbouring county constituency of Cannock.