South West was a combined constituency region of the European Parliament, comprising the South West of England and Gibraltar. Seven, later six, Members of the European Parliament using closed party-list proportional representation allocated using the D'Hondt method of distribution were elected. The constituency was abolished when Britain left the European Union on 31 January 2020.
South Wales was a European Parliament constituency covering south central Wales, including the city of Cardiff.
Bristol was a European Parliament constituency centred on Bristol in England, but covering much of Avon. Until 1984, it included parts of southern Gloucestershire and northwestern Wiltshire.
Devon was a European Parliament constituency covering all of Devon in England, with the exception of the city of Plymouth.
Leeds was a European Parliament constituency, centred on Leeds in the West Yorkshire area of England.
Prior to its uniform adoption of proportional representation in 1999, the United Kingdom used first-past-the-post for the European elections in England, Scotland and Wales. The European Parliament constituencies used under that system were smaller than the later regional constituencies and only had one Member of the European Parliament each.
Sheffield was a European Parliament constituency covering the City of Sheffield and parts of Derbyshire in England.
Somerset was a European Parliament constituency in England, covering all of Somerset and southern Avon.
South East Wales was a European Parliament constituency covering south eastern Wales, including Gwent and parts of Mid Glamorgan.
Wessex was a European Parliament constituency covering all of Dorset in England, plus parts of western Hampshire and southern Wiltshire. It was named after the Anglo-Saxon Kingdom of Wessex.
Yorkshire West was a European Parliament constituency covering the western parts of West Yorkshire in England, including Bradford and Halifax.
South Wales West was a European Parliament constituency covering part of south Wales, including the city of Swansea.
South Wales East was a European Parliament constituency covering southeastern Wales, including Gwent and parts of Mid Glamorgan.
South Wales Central was a European Parliament constituency covering south central Wales, including the city of Cardiff.
Somerset and North Devon was a European Parliament constituency covering all of Somerset in England, plus northern Devon and south-western Avon. With Cornwall and West Plymouth, it was one of the first two seats to elect a Liberal Democrat Member of the European Parliament.
Somerset and Dorset West was a European Parliament constituency covering all of Somerset in England, plus parts of Avon and western Dorset.
Dorset East and Hampshire West was a European Parliament constituency covering most of Dorset and parts of western Hampshire in England.
Dorset and East Devon was a European Parliament constituency covering all of Dorset in England, with the exception of Christchurch, plus parts of eastern Devon.
Devon and East Plymouth was a European Parliament constituency covering all of Devon in England, with the exception of the city of Plymouth. It was created in 1994 to replace the majority of Devon and a small part of Cornwall and Plymouth.
Cornwall and West Plymouth was a European Parliament constituency covering Cornwall and Plymouth in England. With Somerset and North Devon, it was one of the first two seats to elect a Liberal Democrat Member of the European Parliament.
