The constituency consisted of the Westminster Parliament constituencies of Bridgwater, North Devon, Somerton and Frome, Taunton, Wells, Weston-super-Mare and Yeovil.

It consisted of the Westminster Parliament constituencies of Boothferry, Glanford and Scunthorpe, Harrogate, Ryedale, Scarborough, Selby and York.

Upper Thames consisted of the Westminster Parliament constituencies of Abingdon, Devizes, Henley, Swindon, Newbury, Reading North, and Reading South.

The constituency consisted of the Westminster Parliament constituencies of Bath, Bridgwater, Somerset North, Taunton, Wells, Weston-super-Mare and Yeovil.

It consisted of the Westminster Parliament constituencies of Harrogate, Ryedale, Scarborough, Selby, Skipton and Ripon and York.

The constituency consisted of the Westminster Parliament constituencies of Barkston Ash, Goole, Harrogate, Ripon, Skipton, Thirsk and Malton, York.

The constituency consisted of the Westminster Parliament constituencies of Aberavon, Bridgend, Gower, Neath, Ogmore, Swansea East and Swansea West.

When the constituency was created in 1979, it consisted of the Westminster Parliament constituencies of Barnsley, Dearne Valley, Doncaster, Don Valley, Penistone, Rotherham and Rother Valley.

The areas also correspond to the Westminster Parliament constituencies of Shropshire, with the North and Central areas being exactly coextensive with constituencies.

Wiltshire North and Bath consisted of the Westminster Parliament constituencies of Bath, Devizes, North Wiltshire, Swindon, Wansdyke, and Westbury.

The constituency consisted of the Westminster Parliament constituencies of Bridgwater, North Devon, Somerton and Frome, Taunton, Wells, Weston-super-Mare and Yeovil.

It consisted of the Westminster Parliament constituencies of Boothferry, Glanford and Scunthorpe, Harrogate, Ryedale, Scarborough, Selby and York.

Upper Thames consisted of the Westminster Parliament constituencies of Abingdon, Devizes, Henley, Swindon, Newbury, Reading North, and Reading South.

The constituency consisted of the Westminster Parliament constituencies of Bath, Bridgwater, Somerset North, Taunton, Wells, Weston-super-Mare and Yeovil.

It consisted of the Westminster Parliament constituencies of Harrogate, Ryedale, Scarborough, Selby, Skipton and Ripon and York.

The constituency consisted of the Westminster Parliament constituencies of Barkston Ash, Goole, Harrogate, Ripon, Skipton, Thirsk and Malton, York.

The constituency consisted of the Westminster Parliament constituencies of Aberavon, Bridgend, Gower, Neath, Ogmore, Swansea East and Swansea West.

When the constituency was created in 1979, it consisted of the Westminster Parliament constituencies of Barnsley, Dearne Valley, Doncaster, Don Valley, Penistone, Rotherham and Rother Valley.

The areas also correspond to the Westminster Parliament constituencies of Shropshire, with the North and Central areas being exactly coextensive with constituencies.

Wiltshire North and Bath consisted of the Westminster Parliament constituencies of Bath, Devizes, North Wiltshire, Swindon, Wansdyke, and Westbury.