Labour Party

Scottish Parliament
Scottish Conservatives | Scottish Greens | Scottish Labour | Scottish Liberal Democrats | Scottish National Party

National Assembly for Wales
Welsh Conservatives | Welsh Labour | Welsh Liberal Democrats | Plaid Cymru | United Kingdom Independence Party

Northern Ireland Assembly
Alliance | Democratic Unionist Party | Greens (NI) | Independent Unionists | People Before Profit | Sinn Féin | Social Democratic and Labour Party | Traditional Unionist Voice | Ulster Unionist Party

European Parliament
Conservatives (ECR, UCUNF) • Labour (PES) • UKIP (EFD) • Liberal Democrats (ELDR) • BNP • Greens (E&W) (EGP) • SNP (EFA) • Plaid Cymru (EFA) • Sinn Féin (EUL-NGL) • DUP

Other national and regional parties
Christian Peoples Alliance • Christian • Communist • Éirígí • English Democrats • IKHH • IWCA • Liberal • Mebyon Kernow • National Front • Official Monster Raving Loony • Progressive Unionist • Republican Sinn Féin • Scottish Socialist • Social Democratic • Socialist Labour • Socialist • Socialist Workers • Solidarity • Workers (Ireland)