The Borough of Bebington, and the County Borough of Birkenhead wards of Bebington, Devonshire, Egerton, Mersey, and Prenton.[1]
The Borough of Bebington and the Prenton ward of the County Borough of Birkenhead had previously been part of the Wirral constituency, with remaining Birkenhead wards being added from the former Birkenhead East constituency.
On abolition in 1974, the Borough of Bebington became part of the new constituency of Bebington and Ellesmere Port, the Prenton ward was returned to Wirral and the remaining wards added to the redrawn Birkenhead constituency.