List of political parties in the United Kingdom

This article is part of a series on
Politics of the United Kingdom
Constitution Magna Carta Bill of Rights Treaty of Union (Acts of Union) Parliamentary sovereignty Rule of law Separation of powers Other constitutional principles
The Crown The Monarch (list) Charles III Heir apparent William, Prince of Wales Royal family Succession Prerogative Counsellors of State Republicanism in the United Kingdom
Executive Privy Council Charles III (King-in-Council) HM Government Cabinet (list) Sunak ministry (C) Prime Minister (list) Rishi Sunak (C) Deputy Prime Minister Oliver Dowden (C) Departments Ministers Agencies
Legislature UK Parliament (King-in-Parliament) King Charles III House of Lords Lord Speaker The Lord McFall of Alcluith House of Commons Speaker Sir Lindsay Hoyle Leader of the Opposition Sir Keir Starmer (L) 58th Parliament Opposition MPs List of MPs
Judiciary Charles III (King-on-the-Bench) Supreme Court President The Lord Reed of Allermuir Deputy President Lord Hodge Justices of the Supreme Court United Kingdom England and Wales Scotland Northern Ireland
Bank of England Governor Andrew Bailey Deputy governors Monetary Policy Committee Currencies Banknotes Coins
Elections and referendums UK Parliament constituencies (2023 Periodic Review of Westminster constituencies) Political parties Political Parties, Elections and Referendums Act 2000 Dissolution and Calling of Parliament Act 2022 Scottish Parliament constituencies and electoral regions Senedd constituencies and electoral regions UK general elections 1801 co-option 1802 1806 1807 1812 1818 1820 1826 1830 1831 1832–33 1835 1837 1841 1847 1852 1857 1859 1865 1868 1874 1880 1885 1886 1892 1895 1900 1906 1910 (Jan–Feb) 1910 (Dec) 1918 1922 1923 1924 1929 1931 1935 1945 1950 1951 1955 1959 1964 1966 1970 1974 (Feb) 1974 (Oct) 1979 1983 1987 1992 1997 2001 2005 2010 2015 2017 2019 Next European Parliament elections (1979–2019) 1979 1984 1989 1994 1999 2004 2009 2014 2019 Scottish Parliament elections 1999 2003 2007 2011 2016 2021 Next Northern Ireland Assembly elections 1998 2003 2007 2011 2016 2017 2022 Next Senedd elections 1999 2003 2007 2011 2016 2021 Next UK referendums 1975 2011 2016
Devolution Intergovernmental relations in the United Kingdom Legislative consent motions England Governance of England English votes for English laws Greater London Authority 1998 referendum Greater London Authority Act 1999 (2007 Act) Mayor of London Sadiq Khan Mayoral cabinet London Assembly London Plan Combined authorities Metro mayors Cornwall Council Northern Ireland Northern Ireland Act 1998 (2006 Act) First Minister Michelle O'Neill deputy First Minister Emma Little-Pengelly Executive Assembly Act of the Northern Ireland Assembly Law of Northern Ireland Scotland Scottish devolution 1997 referendum Scotland Act 1998 (2012 Act, 2016 Act) First Minister Humza Yousaf Government Scottish Parliament Act of the Scottish Parliament Scottish statutory instrument Scots law Wales Welsh devolution 1997 referendum (2011 referendum on law-making powers) Government of Wales Act 1998 (2006 Act, Wales Act 2014, Wales Act 2017) First Minister Vaughan Gething Government Senedd Measure of the National Assembly for Wales (1999–2011) Act of Senedd Cymru Welsh law
Administration England History Subdivisions: Regions Ceremonial counties (list) Metropolitan and non-metropolitan counties Metropolitan county Non-metropolitan county Greater London Unitary authorities (list) Districts (list) Metropolitan Borough Non-metropolitan District London Borough Civil parishes (list) Historic counties Northern Ireland History Subdivisions: Counties Districts Scotland History Subdivisions: Sheriffdoms Council areas Community council areas Civil parishes Shires of Scotland Wales History Preserved counties Principal areas Communities (list) Historic counties
Crown Dependencies Bailiwick of Guernsey (Guernsey Alderney Sark) Bailiwick of Jersey Isle of Man British Islands Common Travel Area UK-CD Customs Union
Overseas Territories Akrotiri and Dhekelia Anguilla Bermuda British Antarctic Territory British Indian Ocean Territory British Virgin Islands Cayman Islands Falkland Islands Gibraltar Montserrat Pitcairn Islands Saint Helena, Ascension and Tristan da Cunha (Saint Helena Ascension Island Tristan da Cunha) South Georgia and the South Sandwich Islands Turks and Caicos Islands British Overseas Territories citizen Visa requirements Visa policies British Overseas Territories Act 2002 UK-OT JMC Chagos Archipelago sovereignty dispute Gibraltar sovereignty dispute Falkland Islands sovereignty dispute
Foreign relations Foreign, Commonwealth and Development Office Foreign policy (history) Diplomatic missions of / in the United Kingdom UK passport British National (Overseas) passport Visa requirements UK–CD Customs Union Visa policy Free trade agreements Australia Barbados Belgium Belize Brunei Canada China Hong Kong Cyprus Denmark France Germany India Israel Italy Japan Kenya Malaysia Malta Netherlands New Zealand Norway Russia Saudi Arabia Singapore Spain South Africa Palestine Pakistan Poland Portugal United States Zimbabwe Ireland politics of Northern Ireland Good Friday Agreement UK–Ireland border Northern Ireland Protocol British–Irish Council European Union (history) Brexit Post-Brexit United Kingdom relations with the European Union UK–EU withdrawal agreement The Commonwealth member states United Kingdom and the United Nations United Nations Security Council P5 NATO G20 G7
United Kingdom portal England Northern Ireland Scotland Wales Other countries
v t e

The Electoral Commission's Register of Political Parties^[1] lists the details of political parties registered to contest elections in the United Kingdom, including their registered name. Under current electoral law, including the Registration of Political Parties Act 1998, the Electoral Administration Act 2006, and the Political Parties, Elections and Referendums Act 2000, only registered party names can be used on ballot papers by those wishing to fight elections. Candidates who do not belong to a registered party can use "independent" or no label at all. As of 29 April 2024^[update], the Electoral Commission showed the number of registered political parties in Great Britain and Northern Ireland as 391.^[2]

Before the middle of the 19th century, politics in the United Kingdom was dominated by the Whigs and the Tories. These were not political parties in the modern sense but somewhat loose alliances of interests and individuals. The Whigs included many of the leading aristocratic dynasties committed to the Protestant succession, and later drew support from elements of the emerging industrial interests and wealthy merchants, while the Tories were associated with the landed gentry, the Church of England and the Church of Scotland.

By the mid 19th century, the Tories had evolved into the Conservative Party, and the Whigs had evolved into the Liberal Party. The concept of right and left came originally from France, where the supporters of a monarchy (constitutional or absolute) sat on the right wing of the National Assembly, and republicans on the left. In the late 19th century, the Liberal Party began to lean towards the left. Liberal Unionists split off from the Liberals over Irish Home Rule and moved closer to the Conservatives over time.

The Liberals and Conservatives dominated the political scene until the 1920s, when the Liberal Party declined in popularity and suffered a long stream of resignations. It was replaced as the main anti-Tory opposition party by the newly emerging Labour Party, which represented an alliance between the labour movement, organised trades unions and various socialist societies.

Since then, the Conservative and Labour parties have dominated British politics, and have alternated in government ever since. However, the UK is not quite a two-party system as other parties have significant support. The Liberal Democrats were the third largest party until the 2015 general election when they were overtaken by the Scottish National Party in terms of seats and UK political party membership, and by the UK Independence Party (UKIP) in terms of votes.

The UK's first-past-the-post electoral system leaves small parties disadvantaged on a UK-wide scale. It can, however, allow parties with concentrations of supporters in the constituent countries to flourish. In the 2015 election, there was widespread controversy^[3][4][5] when the UK Independence Party (UKIP) and the Green Party of England and Wales received 4.9 million votes^[6] (12.6% of the total vote for UKIP and 3.8% for the Greens) yet only gained one seat each in the House of Commons. After that election, UKIP, the Liberal Democrats, the Scottish National Party, Plaid Cymru, and the Green Party of England and Wales, together with its Scottish and Northern Ireland affiliated parties, delivered a petition signed by 477,000^[7] people to Downing Street demanding electoral reform.

Since 1997, proportional representation-based voting systems have been adopted for elections to the Scottish Parliament, the Senedd (Welsh Parliament), the Northern Ireland Assembly, the London Assembly and (until Brexit in 2020) the UK's seats in the European Parliament. In these bodies, other parties have had success.

Traditionally political parties have been private organisations with no official recognition by the state. The Registration of Political Parties Act 1998 changed that by creating a register of parties.

Membership of political parties has been in decline in the UK since the 1950s, falling by over 65% from 1983 (4% of the electorate) to 2005 (1.3%).^[8]