Constituencies of the Parliament of the United Kingdom
The Parliament of the United Kingdom currently has 650 parliamentary constituencies across the constituent countries (England, Scotland, Wales, and Northern Ireland), each electing a single member of parliament (MP) to the House of Commons by the plurality (first-past-the-post) voting system, ordinarily every five years.Voting last took place in all 650 of those constituencies at the United Kingdom general election on 4 July 2024.The number of seats rose from 646 to 650 at the 2010 general election after proposals made by the boundary commissions for England, Wales, and Northern Ireland (the Fifth Periodic Review of Westminster constituencies) were adopted through statutory instruments.The Sainte-Laguë formula method is used to form groups of seats split between the four parts of the United Kingdom and the English regions (as defined by the NUTS 1 statistical regions of England).As of the 2024 election there are 543 constituencies in England, 32 in Wales, 57 in Scotland and 18 in Northern Ireland.
2023 Periodic ReviewElectoral districtUnited KingdomHouse of CommonsPolitics of the United KingdomConstitutionMagna CartaBill of RightsTreaty of UnionActs of UnionParliamentary sovereigntyRule of lawSeparation of powersThe CrownThe MonarchKing Charles IIIHeir apparentWilliam, Prince of WalesRoyal familySuccessionPrerogativeCounsellors of StateRepublicanism in the United KingdomExecutivePrivy CouncilCharles IIIKing-in-CouncilHM GovernmentCabinetStarmer ministryPrime MinisterKeir StarmerDeputy Prime MinisterAngela RaynerDepartmentsMinistersAgenciesLegislatureUK ParliamentKing-in-ParliamentHouse of LordsLord SpeakerThe Lord McFall of AlcluithSpeakerSir Lindsay HoyleLeader of the OppositionKemi Badenoch59th ParliamentOppositionList of MPsJudiciaryKing-on-the-BenchSupreme CourtPresidentThe Lord ReedDeputy PresidentThe Lord HodgeJustices of the Supreme CourtEngland and WalesScotlandNorthern IrelandBank of EnglandGovernorAndrew BaileyDeputy governorsMonetary Policy CommitteeCurrenciesBanknotesElectionsreferendums2023 Periodic Review of Westminster constituenciesPolitical partiesPolitical Parties, Elections and Referendums Act 2000Dissolution and Calling of Parliament Act 2022Scottish Parliament constituencies and electoral regionsSenedd constituencies and electoral regionsUK general elections1801 co-option1832–331910 (Jan–Feb)1910 (Dec)1974 (Feb)1974 (Oct)DevolutionIntergovernmental relations in the United KingdomLegislative consent motionsPrime Minister and Heads of Devolved Governments CouncilCouncil of the Nations and RegionsEnglandGovernance of EnglandEnglish votes for English lawsGreater London Authority1998 referendumGreater London Authority Act 19992007 ActMayor of LondonSadiq KhanMayoral cabinetLondon AssemblyLondon PlanCombined authoritiesNorthern Ireland Act 19982006 ActFirst MinisterMichelle O'Neilldeputy First MinisterEmma Little-PengellyAssemblyAct of the Northern Ireland AssemblyLaw of Northern IrelandScottish devolution1997 referendumScotland Act 19982012 Act2016 ActJohn SwinneyGovernmentScottish ParliamentAct of the Scottish ParliamentScottish statutory instrumentScots lawWelsh devolution2011 referendum on law-making powersGovernment of Wales Act 1998Wales Act 2014Wales Act 2017