List of parliamentary constituencies in South Glamorgan

The Preserved county of South Glamorgan is divided into five Parliamentary constituencies: four Borough constituencies and one County constituency. The current boundaries have been effective since the Welsh Assembly election, 2007 and the 2010 United Kingdom general election.

Name	1997 to 2010	From 2010
Cardiff Central BC(Liberal Democrat) Cardiff North BC(Conservative Party) Cardiff South and Penarth BC(Labour Party) Cardiff West BC(Labour Party) Vale of Glamorgan CC *(Conservative Party) Bridgend CC (part)(Labour Party) Pontypridd CC (part)(Labour Party) * Pre-2010 a small part lay in Mid Glamorgan. A part of Ogmore constituency, too small to show, lay in South Glamorgan.	Parliamentary constituencies in South Glamorgan pre-2010	Parliamentary constituencies in South Glamorgan 2010

The Vale of Glamorgan constituency was formed out of the Barry constituency in 1983, with Penarth moving into the new Cardiff South and Penarth (which prior to this was simply Cardiff South).

Changes proposed in 2016

As part of the Sixth Periodic Review of Westminster constituencies the Boundary Commission for Wales proposed changes to almost all the existing Welsh Westminster constituencies, giving some of them Welsh language names.

• Cynon Valley and Pontypridd
• Rhondda and Llantrisant
• Cardiff West
• Cardiff North
• Cardiff South and East
• Vale of Glamorgan East
• Bridgend and Vale of Glamorgan West
• Ogmore and Port Talbot
• Neath and Aberavon
• Swansea East
• Gower and Swansea West