Conservative Party
From Peel and Disraeli through Thatcher, Europe and Brexit.
Read history →HOUSE OF COMMONS
Parties
Current Commons party groupings from UK Parliament, plus UK Decides histories of the political parties represented at Westminster.
CURRENT REPRESENTATION
Parties in the House of Commons
Live membership data from UK Parliament
17 active party groupingsSource: UK Parliament
APNI
Alliance
View party profile →Con
Conservative
View party profile →DUP
Democratic Unionist Party
View party profile →Green
Green Party
View party profile →Ind
Independent
View current MPs →Lab
Labour
View party profile →LD
Liberal Democrat
View party profile →PC
Plaid Cymru
View party profile →RUK
Reform UK
View party profile →RB
Restore Britain
View party profile →SNP
Scottish National Party
View party profile →SF
Sinn Féin
View party profile →SDLP
Social Democratic & Labour Party
View party profile →Spk
Speaker
View current MPs →TUV
Traditional Unionist Voice
View party profile →UUP
Ulster Unionist Party
View party profile →YP
Your Party
View party profile →POLITICAL REFERENCE
Party histories
Origins, turning points, electoral development and official party links.
Labour Party
From the labour movement and trade unions to the Attlee government, New Labour and beyond.
Read history →Liberal Democrats
The Liberal tradition, the SDP alliance and the creation of the modern party in 1988.
Read history →Green Party
From PEOPLE and the Ecology Party to parliamentary Green politics.
Read history →Reform UK
From the Brexit Party to a broader national political party.
Read history →Restore Britain
From a 2025 political movement to a registered national party in 2026.
Read history →Scottish National Party
From its 1934 foundation to devolution, government and the independence referendum.
Read history →Plaid Cymru
A century of Welsh nationalism, language politics, devolution and independence campaigning.
Read history →Alliance Party
Cross-community politics from the Troubles to the Good Friday Agreement and beyond.
Read history →Democratic Unionist Party
From Ian Paisley and opposition politics to power-sharing and modern unionism.
Read history →Sinn Féin
The evolution of Sinn Féin from revolutionary nationalism to modern electoral politics.
Read history →SDLP
Civil rights, constitutional nationalism and John Hume’s role in the peace process.
Read history →Ulster Unionist Party
From the Home Rule era and Stormont government to the Good Friday Agreement.
Read history →Traditional Unionist Voice
A newer unionist party formed in opposition to the post-1998 power-sharing settlement.
Read history →Your Party
The new socialist party launched in 2025 and organised around a collective leadership model.
Read history →Independent MPs and the Speaker appear in Parliament's live grouping data above, but they are not political parties and therefore do not have party-history pages here.