list of political parties in the United Kingdom

|Labour Party

|A social democratic party that has its roots in the trade union movement. The party has several internal factions, which include: Progressive Britain, which promotes a continuation of New Labour policies and is considered to be on the right of the party; the soft-left Open Labour; Momentum, which represents the party's left-wing, democratic socialist grouping; and Blue Labour, which promotes socially and culturally conservative values while remaining committed to labour rights and left-wing economics. Labour also has candidates who stand on a split-ticket with the Co-operative Party.

|Co-operative Party

|A party that promotes cooperative principles and values, providing political representation for the British co-operative movement. Since 1927, the party has been in an electoral alliance with the Labour Party, standing joint candidates under the Labour and Co-operative label.

| style="width: 170pt;" |Conservative and Unionist Party

|A politically conservative party loosely divided into three categories: the One Nation Conservatives, the Thatcherites, who strongly support a free market with restrained government spending and tend to be Eurosceptic; and the Cornerstone Group.

|Liberal Democrats

|A liberal party; its main branches are social liberals based around the Social Liberal Forum, and the more centrist Liberal Reform grouping, which places more of an emphasis on economic liberalism. There is also a social democratic faction and influence within the party.

|Scottish National Party (SNP)

|Scottish nationalist and social democratic party which supports Scottish independence and membership of the European Union or further devolution for Scotland.

|Sinn Féin

|Irish republican party dedicated to the reunification of Ireland and the creation of a new republic based on democratic socialist values. It holds a policy of abstentionism for the House of Commons, with its MPs not taking their seats in this legislature.

|Reform UK

|Right-wing populist and Eurosceptic party, led by former UK Independence Party (UKIP) leader MEP and current MP for Clacton, Nigel Farage.

|Democratic Unionist Party (DUP)

|Strongly British unionist party in Northern Ireland which promotes social and national conservatism.

|Green Party of England and Wales

|Green party that combines environmentalism and sustainability with left-leaning economic policies, while taking a progressive approach socially. The party also has eco-socialist and anti-capitalist factions, such as the Green Left grouping.

|Plaid Cymru

|Democratic socialist, social democratic, and Welsh nationalist party in favour of Welsh independence or further devolution for Wales.

|{{Nowrap|Social Democratic and Labour Party}} (SDLP)

|Irish nationalist and social-democratic party supporting a united Ireland.

|Alliance Party of Northern Ireland (APNI)

|Liberal, nonsectarian and pro-European political party in Northern Ireland.

|Ulster Unionist Party (UUP)

|Conservative and Unionist party in Northern Ireland, taking a somewhat "softer" stance on social issues than the DUP. The party was formerly tied to the Conservative Party in Great Britain.

|Traditional Unionist Voice (TUV)

|Strongly social and national conservative unionist party in Northern Ireland. It has formed an alliance with Reform UK.

|Scottish Greens

|Green party in favour of Scottish independence and Scottish republicanism.

|People Before Profit (PBP)

|Socialist and Trotskyist party that is active in both the Republic of Ireland and Northern Ireland.

| Liberal Party

| 1989

| Centre

| Liberalism (British), Euroscepticism

| Steve Radford

| Liverpool, North Yorkshire, East Devon, Wyre Forest, Teignbridge

| 8

|Workers Party of Britain

|2019

|Left-wing to far-left

|Socialism, social conservatism, Euroscepticism

|George Galloway

| Burnley, Calderdale, Longsight, Rochdale

| 5

| Social Democratic Party (SDP)

| 1990

| {{Nowrap|Fiscal: Centre-left
Social: Centre-right}}

| Social democracy, cultural conservatism, communitarianism, Euroscepticism

| William Clouston

| Leeds City Council

| 3

| Climate Party

| 2022

|Centre-right

| Green conservatism

|Edmund Gemmell

|Buckinghamshire Council

|1

|Heritage Party

| 2020

|Right-wing

| Euroscepticism, right-wing populism, British nationalism

|David Kurten

| Kent County Council

|1

|National Flood Prevention Party

| 2011

| Single-issue

| {{N/A}}

|Ewan Larcombe

|Windsor and Maidenhead Borough Council

|1

|Party of Women

| 2024

| Single-issue

| Gender-critical feminism, anti-transgender

| Kellie-Jay Keen-Minshull

| Maldon

| 1

| Social Justice

| 2023

| Left-wing

| Environmentalism, democratic socialism

| Simon Chester

| North Yorkshire Council

| 1

| Trade Unionist and Socialist Coalition (TUSC)

| 2010

| Left-wing to far-left

| Trade unionism, socialism

| Dave Nellist

| Wrexham County Borough Council

| 1

| Green Party Northern Ireland

| 1981

| Northern Ireland (nation)

| Centre-left

| {{Nowrap|Green politics, nonsectarianism}}

| Mal O'Hara

| Ards and North Down, Belfast

| 5{{Cite web |title=Your Councillors |url=https://www.greenpartyni.org/your_councillors |access-date=2024-01-08 |website=Green Party Northern Ireland |language=en}}

| Mebyon Kernow

| 1951

| Cornwall (region)

| Centre-left

| Cornish nationalism, civic nationalism, regionalism,
social democracy, environmentalism

| Dick Cole

| Cornwall{{Cite web |title=Open Council Data UK - compositions councillors parties wards elections |url=http://opencouncildata.co.uk/councillors.php?p=25&y=0 |website=opencouncildata.co.uk}}

|5

| Yorkshire Party

| 2014

| Yorkshire (region)

| Centre to centre-left

| {{Nowrap|Yorkshire regionalism}}, social democracy

| Bob Buxton

| East Riding

| 3

| North East Party

| 2014

| North East England (region)

| Centre to centre-left

| Regionalism, progressivism

| Mark Burdon

| Durham County Council

| 2{{Cite web |date=2024-01-07 |title=Your Councillors |url=https://democracy.durham.gov.uk/mgMemberIndex.aspx?bcr=1 |access-date=2024-01-07 |website=democracy.durham.gov.uk |language=en}}

| British Unionist Party

| 2015

| Scotland (nation)

| Syncretic

| British unionism, Scottish unionism, Social conservatism, Social democracy, British nationalism

| John Ferguson

| North Lanarkshire Council

| 1

| Gwlad

| 2018

| Wales (nation)

| Centre-right

| Welsh nationalism, Welsh independence

| Gwyn Wigley Evans

| Ceredigion County Council

| 1

| Propel

| 2020

| Wales (nation)

| {{N/A}}

| Welsh nationalism, Welsh independence, localism, sovereignism

| Neil McEvoy

| Cardiff, Gwynedd, Neath Port Talbot

| 1

| Ashfield Independents

| Jason Zadrozny

| Ashfield, Nottinghamshire

| 42

|Havering Residents Association

|

|Havering London Borough Council

|25

| Aspire

| Kalam Mahmud Abu Taher Choudhury

| Tower Hamlets Council

| 24

| The People's Independent Party

| Warren Gibson

| Castle Point

| 24

| Residents for Uttlesford

| Petrina Lees

| Uttlesford, Essex County Council

| 24

|Broxtowe Independents

|

|Broxtowe Borough Council, Nottinghamshire County Council

| 19

|Anne Dorrian

|Boston Borough Council

| 18

| Canvey Island Independent Party

| David Blackwell

| Castle Point, Essex

| 17

| Farnham Residents

| No leader

| Surrey County Council, Waverley

| 16

| Loughton Residents Association

| {{N/A}}

| Epping Forest District, Essex County Council

| 14

| {{Nowrap|Lincolnshire Independents}}

| Marianne Overton

| Lincolnshire County Council, North Kesteven District Council, West Lindsey District Council

| 13

| Swale Independents

| Mike Baldock

| Kent County Council, Swale Borough Council

| 12

| Basingstoke & Deane Independents

| Christopher Tomblin

| Basingstoke and Deane

| 11

| Ashford Independents

| Noel Ovenden

| Ashford Borough Council

| 10

| Community Campaign (Hart)

| James Radley

|Hart District Council

|10

|West Suffolk Independents

| Victor Lukaniuk

|Suffolk County Council

|10

| Portsmouth Independent Party

| George Madgwick

| Portsmouth City Council

| 9

| Residents for Guildford and Villages

| Jonathan Bigmore

| Guildford, Surrey

| 9

| South Holland Independents

| Paul Barnes

| South Holland District Council, Lincolnshire County Council

| 9

| Christchurch Independents

|

| BCP Council

| 8

| Radcliffe First

|

| Metropolitan Borough of Bury

| 8

| Rochford District Residents

| No Leader

| Rochford District, Essex County Council

| 8

| Ashtead Independents

| Chris Hunt

| Mole Valley, Surrey

| 7

|

|Peterborough City Council

|7

|

|Rother District Council

|7

|

|Borough of Stafford

|7

| Whitehill & Bordon Community Party

| Andy Treehttp://www.whitehillbordon.org.uk/ {{Bare URL inline|date=August 2024}}

| East Hampshire District Council, Hampshire County Council

| 7

| Horwich and Blackrod First

| David Grant

| Horwich Town Council, Bolton Council

| 6

| Morley Borough Independents

| Robert Finnigan

| Leeds City Council

| 6

|Reform Derby

| Alan Graves

|Derby City Council

|6

| The Borough First

| Suzanne Cross

| Windsor and Maidenhead Borough Council

| 6

| Derwentside Independents

| Watts Stelling

| Durham County Council

| 5

| Local Alliance

| Timothy Johnson

| Chichester District Council, West Sussex County Council

| 5

|

|Tandridge District

|5

| Poole People Party

| Mark Howell

| BCP

| 5

| Residents of Wilmslow

| No Leader

| Cheshire East Council

| 5

| Runnymede Independent Residents' Group

| Elaine Gill

| Runnymede

| 5

|

|East Lindsey

|5

|

|Cambridgeshire County Council, Huntingdonshire County Council

|5

| Henley Residents Group

| Gill Dodds

| South Oxfordshire, Oxfordshire

| 4

| Independent Network

| Marianne Overton

| City of Chelmsford, Wigan Metropolitan Borough Council

| 4

| Llantwit First Independents

| Gwyn John

| Vale of Glamorgan Council

| 4

| Mansfield Independents

| Martin Wright

| Mansfield, Nottinghamshire

| 4

| Molesey Residents' Association

| Stuart Selleck

| Surrey County Council, Elmbridge Borough Council

| 4

|Nork Residents' Association

|No leader

|Reigate and Banstead, Surrey

|4

| Our West Lancashire

| Adrian Owens

| West Lancashire Borough Council

| 4

|

|Durham County Council

|4

| Residents Associations of Epsom and Ewell

| Keith Lugton

| Epsom and Ewell, Surrey

| 4

|

|Epsom and Ewell Borough Council

|4

| Thames Ditton & Weston Green Residents' Association

| Graham Cooke{{Cite web|url=http://search.electoralcommission.org.uk/English/Registrations/PP64|title = View registration - the Electoral Commission}}

| Elmbridge Borough Council

| 4

| Thornaby Independent Association

| No Leader

| Stockton-on-Tees Borough Council

| 4

| Tunbridge Wells Alliance

| Nicholas Pope

| Tunbridge Wells Borough Council

| 4

|

|Bromley Borough Council

|3

|

|Stockport Metropolitan Borough Council

|3

|Esher Residents Association

|No leader

|Elmbridge Borough Council

|3

|

|Oldham Council

|3

| Guildford Greenbelt Group

| Susan Parker

| Guildford

| 3{{Cite web |date=2023-05-05 |title=Election results by party, 5 May 2023 |url=https://www.guildford.gov.uk/article/18988/pageTitle |access-date=2023-05-06 |website=Guildford Borough Council |language=en}}

|

|Leeds City Council

|3

|

|Havering London Borough Council

|3

| Independents for Dorset

| Les Fry

| Dorset Council

| 3

|Ingleby Barwick Independent Society

|Kenneth Dixon

|Stockton-on-Tees Borough Council

|3

|Liverpool Community Independents

|Alan Gibbons

|Liverpool City Council

|3

|

|Malvern Hills District

|3

| Morecambe Bay Independents

| Geoff Knight

| Lancaster City Council

| 3

|Newcastle Independents

|Jason Smith

|Newcastle City Council

|3{{Cite web|date=2020-07-21|title=Find Councillor|url=https://www.newcastle.gov.uk/moderngov/|access-date=2020-07-21|website=www.newcastle.gov.uk|language=en-GB}}

| Newport Independents Party

| Kevin Whitehead

| Newport, South Wales

| 3

| Nottingham Independents

| Kevin Clarke

| Nottingham City Council

| 3

|

|North Somerset Council

|3

|

|Tandridge District

|3

|

|Epsom and Ewell Borough Council

|3

|Tattenhams & Preston Residents

|No leader

|Reigate and Banstead, Surrey

|3

|

|Thanet District

|3

|

|Peterborough City Council

|3

|

|Warwick District

|3

|

|Amber Valley Borough Council

|2

|

|Brighton and Hove City Council

|2

|

|Rossendale Council

|2

|

|Epsom and Ewell Borough Council

|2

| Farnworth and Kearsley First

| Peter Flitcroft

| Bolton Council

| 2

|

|Braintree District

|2

| Hinchley Wood Residents Association

| Saranne Bristow{{Cite web|url=http://search.electoralcommission.org.uk/English/Registrations/PP15|title = View registration - the Electoral Commission}}

| Elmbridge Borough Council

| 2

|

|Tonbridge and Malling

|2

|

|City and County of Swansea Council

|2

|

|Herefordshire Council

|2

| Kingston Independent Residents Group

| James Giles

| Kingston upon Thames London Borough Council

| 2

|Knowle Community Party

|Gary Hopkins

|Bristol City Council

|2{{cite news|url=https://www.bristol247.com/news-and-features/news/longstanding-lib-dem-councillors-resignations-throw-party-into-turmoil/|title=Longstanding Lib Dem Councillors' resignations throw party into turmoil|last=Booth|first=Martin|date=13 December 2021|work=Bristol24-7|access-date=16 December 2021}}{{cite news|url=https://www.bristolpost.co.uk/news/bristol-news/bristol-new-political-party-after-6341873|title=Bristol has a new political party after two councillors quit theirs to start one up|last=Cork|first=Tristan|date=13 December 2021|work=Bristol Post|access-date=16 December 2021}}{{cite news|url=https://www.bristolworld.com/news/politics/two-city-councillors-quit-the-lib-dems-to-set-up-new-party-3493113|title=Two city councillors quit the Lib Dems to set up new party|last=Ross|first=Alex|date=13 December 2021|work=Bristol World|access-date=16 December 2021}}

| Merton Park Ward Residents Association

| Peter Southgate

| Merton London Borough Council

| 2

| Mexborough First

| Andrew Pickering

| City of Doncaster Council

| 2

|

|Metropolitan Borough of Rochdale

|2

| Old Windsor Residents Association

| Jane Dawson

| Windsor and Maidenhead Borough Council

| 2

| Poole Engage Party

| Judy Butt

| BCP Council

| 2

|

|Rushcliffe Borough Council

|2

| Swanscombe and Greenhithe Residents' Association

|Peter Martin Harman

|Dartford Borough Council

|2

| Tewkesbury and Twyning Independents

| No Leader

| Tewkesbury Borough Council

| 2

|

|Cheshire East Council

|2

|Frankie Theobalds

|Windsor and Maidenhead Borough Council

|2

| Weybridge & St. George's Independents

| no leader

| Elmbridge Borough Council

| 2

| Alderley Edge First

| Mike Dudley-Jones

| Cheshire East

| 1

|Blue Revolution

|Rosalyn Parker-Lee

|Boston Borough Council

|1

| City Independent

| No Leader

| Stoke-on-Trent City Council

| 1{{cite web |url= https://www.stoke.gov.uk/councillors/specificParty/1/city_independents |title= Councillors by Party: City Independents |website= stoke.gov.uk |access-date= 11 August 2022}}

|East Cleveland Independent

|No leader

|Redcar and Cleveland Borough Council

|1

|

|Doncaster Council

|1

| Independent Union

| Shane Moore

| Hartlepool

| 1{{cite web | url=https://www.hartlepool.gov.uk/councillors/specificParty/13/hartlepool_independent_union | title=Hartlepool Borough Council - Find Councillors}}

|

|Portsmouth City Council

|1

| One Kearsley

| Paul Heslop

| Bolton Council

| 1

|

|Isle of Wight Council

|1

| People Against Bureaucracy

| Stan Smith

| Cheltenham, Gloucestershire

| 1

| Rotherham Democratic Party

| Allen Cowles

| Rotherham

| 1

| Tendring First

| Terry Allen

| Tendring District Council

| 1

|

|Borough of Elmbridge

|1

| The Rubbish Party

| Sally Cogley

| East Ayrshire

| 1

| Upminster and Cranham Residents' Association

| Linda Hawthorn

| Havering London Borough Council

| 1{{Cite web |last=Tyler |first=Marcus |title=Benefit information for landlords |url=https://www.havering.gov.uk/info/20012/housing_benefit_and_council_tax_support/466/benefit_information_for_landlords |access-date=2024-01-07 |website=www.havering.gov.uk |language=en}}

| West Dunbartonshire Community Party

| Drew MacEoghainn

| West Dunbartonshire Council

|1{{Cite web |title=West Dunbartonshire Community Party |url=https://www.west-dunbarton.gov.uk/council/councillors-and-committees/councillor/councillors-by-party/west-dunbartonshire-community-party/ |access-date=2024-01-07 |website=www.west-dunbarton.gov.uk |language=en}}

|Wickford Independents

| No leader

|Basildon Borough Council

|1

| 4 Freedoms Party (UK EEP)

| Dirk Hazell

| Conservatism, pro-Europeanism

| Centre-right

| 5 Star Direct Democracy Party

| Collective leadership

| Direct democracy, Euroscepticism

| {{N/A}}

| Abolish the Scottish Parliament Party

| John Mortimer

| Scottish Parliament abolition, Scottish Unionism, Anti-Devolution

| {{N/A}}

| Abolish the Welsh Assembly Party

| Richard Suchorzewski

| Welsh Parliament abolition, Anti-Devolution, British Unionism

| {{N/A}}

| Animal Welfare Party (AWP)

| Vanessa Hudson

| Animal welfare

| {{N/A}}

| Aontú (Minor party in the Republic of Ireland)

| Peadar Tóibín

| Anti-abortion, Irish republicanism, social conservatism, Soft Euroscepticism

| Fiscal:Centre-left
Social:Centre-right

| Britain First

| Paul Golding

| British fascism, neo-fascism, ultranationalism, British unionism, anti-Islam, Euroscepticism

| Far-right

|British Democrats (BDP)

| Jim Lewthwaite

|British nationalism, anti-immigration, anti-Islam, economic nationalism, monarchism

|Far-right{{cite news |author=Collins, Matthew |date=8 February 2013 |title=Neo-Nazi former BNP members launch new far-right party |url=http://www.newstatesman.com/politics/2013/02/neo-nazi-former-bnp-members-launch-new-far-right-party |access-date=8 February 2013 |work=New Statesman}}

| British National Party (BNP)

| Adam Walker

| British fascism, right-wing populism, white nationalism, ethnic nationalism, ultranationalism, hard Euroscepticism

| Far-right

| Christian Party

| Jeff Green

| Christian right, social conservatism, British unionism Euroscepticism

| Right-wing

| Christian Peoples Alliance (CPA)

| Sidney Cordle

| Christian right, Christian democracy, social conservatism, Euroscepticism

| Right-wing

| Church of the Militant Elvis Party

| David Bishop

| Political satire

| {{N/A}}

| Common Good

| Dick Rodgers

| Christian democracy, social conservatism, anti-Islam

| Right-wing

| Communist League

| No clear leader

| Communism, Euroscepticism

| Far-left

| Communist Party of Britain (CPB)

| Robert Griffiths

| Communism, Marxism–Leninism

| Far-left

| Communist Party of Britain
(Marxist–Leninist) (CPB-ML)

| No clear leader

| Communism, Marxism–Leninism, hard Euroscepticism

| Far-left

| Communist Party of Great Britain
(Marxist–Leninist) (CPGB-ML)

| Ella Rule

| Communism, Marxism–Leninism, Stalinism, anti-revisionism, anti-Zionism,{{Cite web|url=http://thecommunists.org/2018/11/24/news/zionism-racist-antisemitic-tool-of-imperialist-policy-in-the-middle-east-palestine-israel/|title=Zionism is a racist and antisemitic tool of imperialist policy in the middle east|date=24 November 2018|website=The Communists}} Hard Euroscepticism{{cite web|url=https://www.cpgb-ml.org/2016/04/01/news/world/europe/why-british-workers-need-a-brexit/|title=Why British workers need a Brexit|website=CPGB-ML|date=1 April 2016}}

| Far-left

| Communist Party of Great Britain
(Provisional Central Committee)

| Collective leadership

| Communism, Leninism, anti-Stalinism

| Far-left

| Cornish Nationalist Party

| Unknown

| Cornish nationalism, Cornish devolution, pan-Celticism

| Right-wing

| Cross-Community Labour Alternative

| Owen McCracken

| Democratic socialism, trade unionism, nonsectarianism, eco-socialism

| Left-wing

| English Democrats

| Robin Tilbrook

| English nationalism, English parliamentary devolution, Euroscepticism

| Right-wing to far-right

|Devizes Guardians

|Nigel Carter

|

|

| Éirígí

| Brian Leeson

| Socialism, Irish republicanism, anti-imperialism, Euroscepticism, environmentalism

| Left-wing to far-left

| Fianna Fáil
{{small|(Major party in the Republic of Ireland)}}

| Micheál Martin

| Conservatism, Christian democracy, Irish nationalism, pro-Europeanism

| Centre to centre-right

| Homeland Party (Britain)

| Kenny Smith

| British nationalism, ethnic nationalism

| Far-right

| Independence for Scotland Party (ISP)

| Colette Walker

| Scottish independence

|Independents for Frome

|Richard Ackroyd

|

|

| Irish Republican Socialist Party

| Collective leadership

| Irish republicanism, Communism, Marxism-Leninism, Anti-globalisation, hard Euroscepticism

| Far-left

| Lewisham People Before Profit

| Patricia Richardson

| Socialism, Localism

| Left-wing

| Left Unity

| Sharon McCourt
Joseph Healy
Nick Jones
(Principal Speakers)

| Socialism, anti-capitalism, environmentalism,
feminism

| Left-wing

| Llais Gwynedd

| Owain Williams

| Gwynedd regionalism

| {{N/A}}

| National Health Action Party (NHA)

| Alastair Fischer and Veronika Wagner

|Re-nationalisation of the NHS,
environmentalism, anti-austerity, reformism

|

| National Front (NF)

| Tony Martin

| Fascism, neo-fascism, British nationalism, white supremacism
{{small|Factions: Neo-Nazism, right-wing populism, Third Positionism}}

| Far-right

| National Liberal Party

| Upkar Singh Rai

| Euroscepticism

| Far-right

| New Communist Party of Britain

| Andy Brooks

| Communism, Marxism-Leninism, anti-revisionism, hard Euroscepticism

| Far-left

| Northern Independence Party (NIP)

| Philip Proudfoot and Evie McGovern

| Northern independence, democratic socialism

| Left-wing

|Official Monster Raving Loony Party (OMRLP)

|1982| Alan "Howling Laud" Hope

|Political satirism

| Peace Party

| John Morris

| Pacifism, environmentalism

|

| Pirate Party

| Lucy Maber

| Pirate politics, civil libertarianism

| {{N/A}}

| Reclaim Party

| Laurence Fox

| Right-wing populism

| Right-wing

|Republican Network for Unity

|Gary McNally

|Irish republicanism, socialism

|Left-wing

| Republican Sinn Féin

| Seosamh Ó Maoileoin

| Irish republicanism, Irish nationalism, Éire Nua, socialism, Euroscepticism, abstentionism, secularism

| Left-wing

| Revolutionary Communist Party Britain (Marxist–Leninist) (RCPB-ML)

| Chris Coleman

| Communism, anti-revisionism, Hoxhaism, Marxism–Leninism

| Far-left

| Saoradh

| Collective leadership

| Irish republicanism, dissident republicanism, revolutionary socialism, hard Euroscepticism, anti-imperialism

| Far-left

| Science Party

| Michael Brooks

| Technocracy

| {{N/A}}

| Scottish Family Party

| Richard Lucas

| Christian right, social conservatism, anti-abortion, anti-LGBT

| Right-wing to far-right

| Scottish Libertarian Party

| Tam Laird

| Libertarianism, classical liberalism, minarchism, Scottish independence, Euroscepticism

| {{N/A}}

| Scottish Socialist Party

| Collective leadership

| Democratic socialism, Scottish independence, Scottish republicanism

| Left-wing

| Socialist Equality Party

| No clear leader

| Trotskyism

| Far-left

| Socialist Labour Party (SLP)

| Jim McDaid

| Socialism, fiscal localism, republicanism, hard Euroscepticism

| Left-wing

| Socialist Party (England and Wales)

| Hannah Sell

| Revolutionary socialism, Trotskyism, Marxism

| Far-left

| Socialist Party (Ireland)

| Collective leadership

| Democratic socialism, political radicalism, Trotskyism, Euroscepticism

| Left-wing to far-left

| Socialist Party of Great Britain (SPGB)

| Collective leadership

| Socialism, Orthodox Marxism, Impossibilism

| Far-left

| Socialist Party Scotland

| No clear leader

| Socialism, Trotskyism, trade unionism

| Far-left

| Socialist Workers Party (SWP)

| Collective leadership

| Trotskyism

| Far-left

| Something New

| Dr James Smith

| Syncretic

| Centre
Syncretic

| Taking The Initiative Party (TTIP)

| Charles Gordon and Sasha Johnson

|

|

| Transform

| Collective leadership

| Eco-socialism, democratic socialism, progressivism

| Left-wing

| UK Independence Party (UKIP)

| Nick Tenconi

|Euroscepticism,{{sfnm|1a1=Lynch|1a2=Whitaker|1a3=Loomes|1y=2012|1p=733|2a1=Tournier-Sol|2y=2015|2pp=141–42}} Right-wing populism,{{sfnm|1a1=Abedi|1a2=Lundberg|1y=2009|1p=72|2a1=Jones|2y=2011|2p=245|3a1=Dolezal|3y=2012|3p=142|4a1=Liebert|4y=2012|4p=123|5a1=Art|5y=2011|5p=188|6a1=Driver|6y=2011|6p=149}} National conservatism,{{cite book|title=Aligning Geopolitics, Humanitarian Action and Geography in Times of Conflict|year=2019|first=Gerry|last=O'Reilly|publisher=Springer|page=47}} Economic liberalism, British nationalism{{cite news|work=New York Times|date=18 April 2018|url=https://www.nytimes.com/2017/04/18/world/europe/britain-snap-election-brexit-theresa-may-questions.html|title=Key Points About a Snap Election in Britain|access-date=20 September 2018|archive-url=https://web.archive.org/web/20180920085527/https://www.nytimes.com/2017/04/18/world/europe/britain-snap-election-brexit-theresa-may-questions.html|archive-date=20 September 2018|url-status=live}}

| {{Nowrap|Right-wing{{cite news |last= Schindler |first= Jörg |date= 16 May 2019 |title= We Want Fundamental Political Change |url= https://www.spiegel.de/international/europe/interview-with-brexit-party-leader-nigel-farage-a-1267728.html |work= Spiegel |access-date= 22 May 2019 |archive-url= https://web.archive.org/web/20190521223810/https://www.spiegel.de/international/europe/interview-with-brexit-party-leader-nigel-farage-a-1267728.html |archive-date= 21 May 2019 |url-status= live}} to far-right{{cite book|author1=Vlastimil Havlík|author2=Vít Hloušek|author3=Petr Kaniok|title=Europeanised Defiance – Czech Euroscepticism since 2004|url=https://books.google.com/books?id=8CRpDwAAQBAJ&pg=PA108|year=2017|publisher=Verlag Barbara Budrich|isbn=978-3-8474-1085-0|page=108}}{{Cite news|url=https://www.theguardian.com/world/2019/mar/03/new-ukip-members-shifting-party-far-right|title=Revealed: Ukip membership surge shifts party to far right|last1=Walker|first1=Peter|last2=Halliday|first2=Josh|date=3 March 2019|work=The Guardian|access-date=21 March 2019|archive-url=https://web.archive.org/web/20190321175746/https://www.theguardian.com/world/2019/mar/03/new-ukip-members-shifting-party-far-right|archive-date=21 March 2019|url-status=live}}{{Cite news|url=https://www.thetimes.co.uk/article/angry-brexiteers-are-splitting-into-factions-as-ukip-is-taken-over-by-far-right-extremists-6xhnkhcct|title=Angry Brexiteers are splitting into factions as Ukip is taken over by far-right extremists|last=Goodwin|first=Matthew|date=3 February 2019|work=The Times|access-date=21 March 2019|archive-url=https://web.archive.org/web/20190321175744/https://www.thetimes.co.uk/article/angry-brexiteers-are-splitting-into-factions-as-ukip-is-taken-over-by-far-right-extremists-6xhnkhcct|archive-date=21 March 2019|url-status=live}}}}

| Wessex Regionalists

| Jim Gunter

| Wessex regionalism, agrarianism

| {{N/A}}

| Whig Party

| Waleed Ghani

| Pro-Europeanism, social progressivism, Whiggism

| Centre

| Workers' Party (Ireland)

| Michael McCorry

| Communism, Marxism–Leninism, Irish republicanism

| Far-left

|Yoruba Party

| Olusola Oni

| Yoruba diaspora interests

|

| Advance Together

| 2017–2020

| Annabel Mullin

| Social liberalism, Subsidiarity, Reformism, Pro-Europeanism

| Centre

| Alliance for Local Living

| 2018–2024

| Felicity Rice

| Localism, Nonpartisanism

| {{N/A}}

| Anti-Federalist League
{{small|(Later became what is now UKIP)}}

| 1991–1993

| Alan Sked

| Euroscepticism

| Right-wing

| Blaenau Gwent People's Voice

| 2005–2010

| No clear leader

| Localism, Populism

| {{N/A}}

| Borders Party

|2006–2020

| Frances Pringle

| Localism

| {{N/A}}

| Boston Bypass Independents

| 2006–2012

| Helen Staples

| Localism

| {{N/A}}

| Britannica Party

| 2011–2020

| Charles Baillie

| British Fascism, Right-wing populism

| Far-right

| British First Party

| 2007

| Kevin Quinn

| Neo-Nazism, White nationalism, White supremacy

| Far-right

| British Freedom Party (BFP)

| 2010–2012

| Kevin Carroll

| British nationalism, Euroscepticism, Anti-Islam

| Far-right

| Burning Pink

| 2020–2022

| Roger Hallam

| Environmentalism

| {{N/A}}

| Burnley and Padiham Independent Party

| 2017–2023

| Mark Payne

|Localism

|{{N/A}}

| Cannabis Is Safer Than Alcohol (CISTA)

| 2015–2016

| Paul Birch

| Cannabis legalisation

| {{N/A}}

| Class War

| 2014–2015

| No clear leader

| Anarchism

| Left-wing to far-left

| Community Action Party

| 2002–2016

| Michael Moulding

| Environmentalism, Localism

| Centre-left

| Communist Party of Great Britain

| 1920–1991

| Nina Temple

| Marxism–Leninism (Until 1970s) Eurocommunism, Gramscianism (After 1977)

| Far-left

| Communist Party of Scotland

| 1992–2017{{Small|(?)}}

| No clear leader

| Communism, Marxism-Leninism, Scottish independence

| Far-left

| The Community Group (Hounslow)

| 1994–2016

| Ian Speed

| Localism

| {{N/A}}

| Countryside Party

| 2000–2008

| No clear leader

| Agrarianism, Conservatism

| Right-wing

| Democratic Alliance of Wales

| 1999–2008

| Mike German

| Localism

| {{N/A}}

| Democratic Labour

| 1972–1979

| Dick Taverne

| Social democracy

| Centre-left

| Democratic Party

| 1998–2010

| Geoff Southall

| Euroscepticism, Direct democracy

| Right-wing

| East Kilbride Alliance

| 2007–2012

| No clear leader

| Localism

| Centre-left

| Ecology Party

| 1975–1985

| Tony Whittaker

| Green politics

| Left-wing

| England First

| 2003–2012

| Mark Cotterill

| Ethnic nationalism, English nationalism,
English independence, Euroscepticism

| Far-right

| Equal Parenting Alliance

| 2006–2020

| Ray Barry

| Fathers' rights movement

| {{N/A}}

| Fancy Dress Party

| 1979–2017

| Steven Fumpleton

| Political satire

| {{N/A}}

| Fellowship Party

| 1955–2007

| Sidney Fagan

| Environmentalism, Pacifism, Christian socialism

| Left-wing

| Fishing Party (Scotland)

| 2003–2004

| George Geddes

| Single-issue

| {{N/A}}

| For Britain Movement

| 2017–2022

| Anne Marie Waters

| Anti-Islam, Right-wing populism, British nationalism,
National conservatism, Hard Euroscepticism

| Far-right

| For Darwen Party

| 2007–2013

| Stephen Potter

| Localism, Hard Euroscepticism

| Right-wing

| Forward Wales

| 2003–2010

| John Marek

| Socialism, Welsh nationalism

| Left-wing

| Free Party

| 1997–2005

| No clear leader

| Political satire

| "Slack"

| Green Party UK
{{Small|Predecessor of the GPEW, SGP, and GPNI.}}

| 1985–1990

| Tom Wood

| Green politics

| Left-wing

| Glasgow First

| 2012–2015

| Gerrard McCue

| Social democracy

| Centre-left

|Harold Hill Independent{{Cite web|url=http://search.electoralcommission.org.uk/English/Registrations/PP6596|title = View registration - the Electoral Commission}}

|2017–2018

| Lorraine Moss

| Localism

| {{N/A}}

|Heavy Woollen District Independents

|2017–2022

|Aleksandar Lukic

|Localism

|{{N/a}}

| Highlands and Islands Alliance

| 1998–2004

| Lorraine Mann

| Localism, Regionalism, Soft Euroscepticism

| {{N/A}}

| Independence from Europe

| 2012–2017

| Mike Nattrass

| Euroscepticism, State ownership,
Direct democracy, English devolution

| Right-wing

| The Independent Group for Change

| 2019

| Anna Soubry

| Centrism, Pro-Europeanism

| Centre

|Independent Community and Health Concern

|2001-2021

|No clear leader

|Localism

|

| Independent Working Class Association (IWCA)

| 1995–2020

| No clear leader

| Socialism, Localism

| Left-wing

| Islamic Party of Britain

| 1989–2006

| David Musa Pidcock

| Islamism

| Third position

| Jury Team

| 2009–2011

| Sir Paul Judge

| Nonpartisan politics, Localism, Direct democracy

| Big tent

| Legalise Cannabis Alliance

| 1997–2013

| Peter Reynolds

| Cannabis legalisation, Drug policy reform

| {{N/A}}

| Left List

| 2008–2010

| Collective leadership

| Socialism

| Left-wing

| Liberal Party
{{Small|(Merged with SDP to make Liberal Democrats)}}

| 1859–1988

| David Steel{{refn|The SDP-Liberal Alliance at dissolution was jointly led by Steel as the leader of the Liberal Party and Robert Maclennan as the leader of the SDP.|group="Note"}}

| Liberalism, Classical liberalism, Social liberalism

| Centre

| Liberty GB

| 2013–2017

| Paul Weston

| Hard Euroscepticism, Right-wing populism,
British nationalism, Social conservatism

| Far-right

| Make Politicians History

| 2005–2009

| Ronnie Carroll

| Anti-Parliamentarianism

| {{N/A}}

| Militant Left

|

| No clear leader

| Socialism, Trotskyism, democratic socialism

| Far-left

| MP3 Party

| 2002–2007

| Ruslan Fedorovsky

| Political satire

| {{N/A}}

| National Democrats (ND)

| 1995–2011

| No clear leader

| British nationalism, Right-wing populism, Third positionism,
Euroscepticism, National conservatism

| Far-right

| Nationalist Alliance

| 2005–2008

| Catherine Parker-Brown

| White supremacy

| Far-right

| Natural Law Party (NLP)

| 1992–2004

| No clear leader

| Pro-Transcendental Meditation

| {{N/A}}

| New Deal

| 2013–2015

| Alan Sked

| Euroscepticism, Social liberalism

| Centre-left

| New Party

| 2003–2010

| Richard Vass

| Neoliberalism, Economic liberalism, Internationalism,
Euroscepticism, Right-libertarianism

| Right-wing

| No2EU

| 2009–2014

| No clear leader

| Euroscepticism, Socialism

| Left-wing

| No Candidate Deserves My Vote!

| 2000–2012

| Amanda Ringwood

| Electoral reform, None of the above

| {{N/A}}

| Northern Ireland Women's Coalition (NIWC)

| 1996–2006

| Monica McWilliams
Pearl Sagar

| Feminism, Nonsectarianism

| {{N/A}}

| Northern Party

| 2015–2016

| Michael Dawson

| Northern England Regionalism

| {{N/A}}

| NI21

| 2013–2016

| Basil McCrea

| Ulster unionism, Social liberalism, Secularism,
Nonsectarianism, Pro-Europeanism

| Centre

| One London

| 2005–2008

| Damian Hockney

| Euroscepticism

| Right-wing

|2013-2022

|Rachael King

|Localism

|{{N/a}}

| Peace and Progress Party

| 2004–2015

| Chris Cooper

| Human rights

| {{N/A}}

| Pro-Euro Conservative Party

| 1999–2001

| John Stevens
Brendan Donnelly

| One-nation conservatism, Liberal conservatism,
Pro-Europeanism

| Centre to centre-right

| ProLife Alliance

| 1996–2004

| Josephine Quintavalle
Bruno Quintavalle

| Anti-abortion

| Single-issue

| Protestant Coalition

| 2013–2015

| Robert McKee

| Irish unionism, Ulster loyalism, British nationalism,
Christian fundamentalism, Christian right

| Far-right

| Raving Loony Green Giant Party

| 1989–1993

| Stuart Hughes

| Environmentalism, Political satire

| {{N/A}}

| Referendum Party

| 1994–1997

| James Goldsmith

| Euroscepticism

| Single-issue

| Renew Party

| 2017–2022

| James Clarke

| Pro-Europeanism

| Centre

| Respect Party

| 2004–2016

| George Galloway

| Anti-war, Socialism, Anti-capitalism, Anti-imperialism,
Anti-Zionism, Euroscepticism

| Left-wing to far-left

| RISE – Scotland's Left Alliance

| 2015–2020

| Jonathon Shafi

| Anti-capitalism, Eco-socialism, Scottish independence, Scottish republicanism

| Left-wing

| Rock 'n' Roll Loony Party

| 2000–2007

| Chris Driver

| Political satire

| {{N/A}}

| Scotia Future

| 2020–2023

| Chic Brodie

| Scottish independence

| {{N/A}}

| Scottish Enterprise Party
{{Small|(Now Scottish Democratic Alliance)}}

| 2004–2009

| Robert Lamb Watson

| Scottish independence, Hard Euroscepticism

| Centre-right

| Scottish Jacobite Party

| 2005–2007 &
2010–2011

| John Black

| Scottish independence, Scottish republicanism,
Euroscepticism

| {{N/A}}

| Scottish Voice

| 2007–2012

| Archie Stirling

| {{N/A}}

| Centre-right

| Senior Citizens Party

| 2004–2014

| Grahame Leon-Smith

| Senior citizen rights

| Big Tent

| Social Democratic Alliance (SDA)

| 1975–1981

| No clear leader

| Social democracy, Anti-communism

| Centre to centre-left

| Social Democratic Party (SDP)
{{Small|(Merged with old Liberal Party
to make Liberal Democrats)}}

| 1981–1988

| Robert Maclennan{{refn|The SDP-Liberal Alliance at dissolution was jointly led by David Steel as the leader of the Liberal Party and Maclennan as the leader of the SDP.|group="Note"}}

| Social democracy, Social liberalism

| Centre

| Socialist People's Party (Furness)

| 1995–2015

| Jim Hamezian

| Socialism

| Left-wing

| Solidarity

| 2006–2021

| Tommy Sheridan

| Socialism, Scottish independence, Scottish republicanism, Euroscepticism

| Left-wing to far-left

| South Devon Alliance

| 2021–2024

| Richard Daws

| {{N/A}}

| {{N/A}}

| Thurrock Independents

| 2018–2023

| Gary Byrne

| Localism, Populism, Nonpartisanism

| Big tent

| Tower Hamlets First

| 2013–2015

| Lutfur Rahman

| Social democracy, Localism

| Centre-left

| Trust Party

| 2010–2011

| Stuart Wheeler

| Soft Euroscepticism

| Right-wing

| UK European Union Party

| 2019–2021

| Pierre Kirk

| Pro-Europeanism, Cultural liberalism, Social liberalism,
Fiscal conservatism

| Centre

| UK Unionist Party (UKUP)

| 1995–2008

| Robert McCartney

| British unionism, Nonsectarianism, Integrationism

| Centre-right

| Ulster Popular Unionist Party

| 1980–1995

| James Kilfedder

| British unionism, Pro-devolution

| Centre-right

| United in Europe

| 2014–2015

| Charles Cormack

| Liberalism, Pro-Europeanism

| Centre-left

| United Kingdom First Party

| 2009–2010

| Robin Page

| Populism, Euroscepticism

| Right-wing

| United Ulster Unionist Party (UUUP)

| 1975–1984

| Ernest Baird

| Ulster loyalism

| Right-wing

| Vanguard Unionist Progressive Party (VUPP)

| 1972–1978

| William Craig

| British nationalism, Ulster loyalism

| Right-wing to far-right

| Veritas

| 2005–2015

| Therese Muchewicz

| Right-wing populism, Euroscepticism

| Right-wing

| Veterans and People's Party (VPP)

| 2017–2022

| Robin Horsfall

| Right-wing populism, British nationalism, hard Euroscepticism, paternalistic conservatism

| Right-wing

| We Demand a Referendum Now (WDARN)

| 2012–2014

| Nikki Sinclaire

| Euroscepticism

| Single-issue

| White Nationalist Party (WNP)

| 2002–2005

| No clear leader

| White nationalism, Neo-fascism, White supremacy

| Far-right