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 covered territory from three pre-1974 local authorities: the southern region of the dissolved administrative county of Cambridgeshire; the south of Huntingdonshire, including St Neots; and two wards within Cambridge.