The constituency combined territory from three pre-1974 local authorities: the south west part of the abolished administrative county of Cambridgeshire; the south of Huntingdonshire, including St Neots; and two wards from Cambridge.
The constituency included areas that were previously part of three pre-1974 local authorities—southwest parts of the abolished administrative county of Cambridgeshire, the southern part of Huntingdonshire (including St Neots), and two wards in Cambridge.