- Alliance Party of Northern Ireland (NI)
- British National Party (UK)
- Conservative Party (UK og NI)
- Democratic Unionist Party (NI)
- Green Party in Northern Ireland (NI)
- Green Party of England and Wales (E og W)
- Labour Party (UK og NI)
- Liberal Democrats (UK)
- Plaid Cymru (W)
- Progressive Unionist Party (NI)
- Respect Coalition (UK)
- Scottish Green Party (S)
- Scottish National Party (S)
- Sinn Féin (NI)
- Social Democratic and Labour Party (NI)
- UK Independence Party (UK og NI)
- Ulster Unionist Party (NI)