Winning political parties - Contesting political parties
- Advance Together
- Alliance
- Alliance For Green Socialism
- All People's Party
- Alter Change - Politics. Only Different.
- Al-Zebabist Nation of Ooog
- Animal Welfare Party
- Aontú
- Apni Party
- Apolitical Democrats
- Ashfield Independents
- Beer, Baccy and Scratchings
- Better for Bradford
- Birkenhead Social Justice Party
- Blue Revolution
- Bournemouth Independent Alliance
- British Democratic Party
- British Independents
- British National Party
- Burnley and Padiham Independent Party
- Campaign
- Cannabis Is Safer Than Alcohol
- Children of the Atom
- Christian Movement for Great Britain
- Christian Party, Proclaiming Christ's Lordship
- Christian Peoples Alliance
- Church of the Militant Elvis Party
- Citizens Independent Social Thought Alliance
- Class War
- Common Good
- Common Sense Party
- Communist League Election Campaign
- Communist Party of Britain
- Communities United Party
- Compass Party
- Concordia
- Consensus
- Conservative
- Cumbria First
- Democratic Reform Party
- Democratic Unionist Party
- Demos Direct Initiative Party
- Digital Democracy
- English Democrats
- Europeans Party
- Free Public Transport Party
- Friends Party
- Give Me Back Elmo
- Greater Manchester Homeless Voice
- Green Party
- Guildford Greenbelt Group
- Gwlad Gwlad
- Heavy Woollen District Independents
- Hoi Polloi
- Humanity
- Independence from Europe
- Independent Kidderminster Hospital and Health Concern
- Independent Network
- Independent Save Withybush Save Lives
- Independents for Bristol
- Independent Sovereign Democratic Britain
- Islam Zinda Baad Platform
- Justice for Men & Boys
- Keep It Real Party
- Labour
- Land Party
- Left Unity
- Liberal
- Liberal Democrat
- Libertarian Party
- Liberty GB
- Lincolnshire Independents Lincolnshire First
- Magna Carta Conservation Party Great Britain
- Mainstream
- Manston Airport Independent Party
- Mebyon Kernow - The Party for Cornwall
- Money Free Party
- Motherworld Party
- Movement for Active Democracy (M.A.D.)
- National Front
- National Health Action Party
- National Liberal Party - True Liberalism
- New Independent Centralists
- North of England Community Alliance
- Official Monster Raving Loony Party
- Open Borders Party
- Party for a United Thanet
- Patria
- Patriotic Socialist Party
- People Before Profit
- People Before Profit Alliance
- People First - Gwerin Gyntaf
- Pirate Party UK
- Plaid Cymru
- Population Party UK
- Populist Party
- Proud of Oldham & Saddleworth
- Psychedelic Movement
- Putting Croydon First!
- Rebooting Democracy
- Red Flag - Anti-Corruption
- Reduce VAT in Sport
- Renew
- Residents for Uttlesford
- Respect Party
- Restore the Family For Children's Sake
- Rochdale First Party
- Save Hartlepool Hospital
- Scotland's Independence Referendum Party
- Scottish Family Party
- Scottish National Party
- Scottish Socialist Party
- Shropshire Party
- Sinn Féin
- Social Democratic & Labour Party
- Social Democratic Party
- Socialist Equality Party
- Socialist Labour Party
- Something New
- Southampton Independents
- Southend Independent Association
- Space Navies Party
- The 30-50 Coalition
- The Above and Beyond Party
- The Best for Luton Party
- The Birthday Party
- The Brexit Party
- The Citizens Movement Party UK
- The Common People
- The Constitution and Reform Party
- The Cynon Valley Party
- The Democratic Party
- The Eccentric Party of Great Britain
- The Evolution Party
- The Independent Group for Change
- The Independent Political Alliance Party
- The Justice & Anti-Corruption Party
- The Just Political Party
- The New Society of Worth
- The North East Party
- The Northern Party
- The Party for Poole People Ltd.
- The Peace Party - Non-violence, Justice, Environment
- The Pilgrim Party
- The Pluralist Party
- The Principles of Politics Party
- The Radical Party
- The Realists' Party
- The Republican Socialist Party
- The Roman Party. Ave
- The Socialist Party of Great Britain
- The Southport Party
- The Sustainable Population Party
- The UK Progressive Democracy Party
- The Universal Good Party
- The U(niversal) Party
- The Whig Party
- The Workers' Party
- The Yorkshire Party
- Touch Love Worldwide (UK)
- Trade Unionist and Socialist Coalition
- Traditional Unionist Voice
- Ubuntu Party
- UK Independence Party
- Ulster Unionist Party
- Vapers In Power
- Veterans and People's Party
- War Veteran's Pro-Traditional Family Party
- We Are The Reality Party
- Wessex Regionalists
- Women's Equality Party
- Workers Revolutionary Party
- World Peace Through Song
- Wycombe Independents
- Yeshua
- Yorkshire First
- Young People's Party