Over the history of the House of Commons, the number of Members of Parliament (MPs) has varied for assorted reasons, with increases in recent years due to increases in the population of the United Kingdom. There are currently 650 constituencies, each sending one MP to the House of Commons, corresponding to approximately one for every 92,000 people, or one for every 68,000 parliamentary electors.
Ynys Môn is a constituency of the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament (MP) by the first past the post system of election. It is one of five 'protected constituencies' within the UK, with boundaries defined by the Parliamentary Constituencies Act 2020 to be to those of Isle of Anglesey County Council where there must be a whole number of MPs rounded up to the nearest whole number with these boundaries.
Yorkshire was a constituency of the House of Commons of the Parliament of England from 1290, then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Members of Parliament, traditionally known as Knights of the Shire, until 1826, when the county benefited from the disfranchisement of Grampound by taking an additional two members.
Honiton was a parliamentary constituency centred on the town of Honiton in east Devon, formerly represented in the House of Commons of the Parliament of the United Kingdom. It sent members intermittently from 1300, consistently from 1640. It elected two Members of Parliament (MPs) until it was abolished in 1868. It was recreated in 1885 as a single-member constituency.
Cambridgeshire is a former Parliamentary constituency in the United Kingdom. It was a constituency represented by two Members of Parliament in the House of Commons of the Parliament of England then in the Parliament of Great Britain from 1707 to 1800 and in the Parliament of the United Kingdom from 1801 to 1832, when its representation was increased to three until it was abolished in 1885.
Derbyshire is a former United Kingdom Parliamentary constituency. It was a constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Knights of the Shire.
Cornwall is a former county constituency covering the county of Cornwall, in the South West of England. It was a constituency of the House of Commons of England then of the House of Commons of Great Britain from 1707 to 1800 and of the House of Commons of the United Kingdom from 1801 to 1832. It was represented by two Knights of the Shire, elected by the bloc vote system.
North Cheshire is a former United Kingdom parliamentary constituency. It was created upon the division of Cheshire in 1832. In 1868 it was abolished with South Cheshire to form East Cheshire, Mid Cheshire, West Cheshire and Stalybridge.
South Cheshire was a parliamentary constituency in Cheshire, England represented in the House of Commons of the United Kingdom from 1832 to 1868. It was created upon the division of Cheshire in 1832. In 1868, it was abolished with North Cheshire to form parts of East Cheshire, Mid Cheshire, and West Cheshire.
East Cheshire was a parliamentary constituency which returned two Members of Parliament (MPs) to the House of Commons of the Parliament of the United Kingdom. Elections were held using the bloc vote system.
West Cheshire is a former parliamentary constituency, which returned two Members of Parliament (MPs) to the House of Commons of the Parliament of the United Kingdom.
Middlesex was a constituency of the House of Commons of the Parliament of England, then of the Parliament of Great Britain from 1707 to 1800, then of the Parliament of the United Kingdom from 1801 until abolished in 1885. It returned two members per election by various voting systems including hustings.
Pembroke was a parliamentary constituency centred on the town of Pembroke in West Wales. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post system.
Lancashire was a county constituency of the House of Commons of the Parliament of England from 1290, then of the Parliament of Great Britain from 1707 to 1800, and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Members of Parliament, traditionally known as Knights of the Shire until 1832.
Cumberland is a former United Kingdom Parliamentary constituency. It was a constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Knights of the Shire. It was divided between the constituencies of Cumberland East and Cumberland West in 1832. Mike Jenkinson, Conservative, served as the local MP in Workington from 2019 until the dissolution of parliament in 2024.
Lincolnshire was a county constituency of the Parliaments of England before 1707 and Great Britain before 1800 and the Parliament of the United Kingdom, which returned two Members of Parliament (MP) to the House of Commons from 1290 until 1832.
Staffordshire was a county constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Members of Parliament until 1832.
Flint Boroughs was a parliamentary constituency in north-east Wales which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom and its predecessors, from 1542 until it was abolished for the 1918 general election.
The ceremonial county of Cheshire, which comprises the unitary authorities of Cheshire East, Cheshire West and Chester, Halton and Warrington, returned 11 MPs to the UK Parliament from 1997 to 2024. Under the 2023 review of Westminster constituencies, coming into effect for the 2024 general election, the boundary commission proposed 12 constituencies, including two which crossed the border into the county of Merseyside.
