British Left left-wing party in the UK, by membership, is the Green Party of England and Wales. , membership was 45,643. The party has one Member of Parliament, Caroline Lucas, who was a Co-Leader of the Green Party of England & Wales; and was first elected as the MP for Brighton Pavilion at the 2010 general election. The other two political parties on the left and with representation in parliament are the centre-left Scottish National Party (SNP) and the left-wing Plaid Cymru. The SNP are only active in Scotland and Plaid are only active in Wales. The SNP has 35 MPs and
Alliance Party of Northern Ireland it is designated as neither unionist nor Irish nationalist, but 'Other'. In general election in May 2010 the Alliance Party won their first House of Commons seat in a UK-wide general election, in the Belfast East constituency, unseating Peter Robinson, First Minister of Northern Ireland and leader of the Democratic Unionist Party (DUP). Naomi Long was the first MP from the Alliance Party since Stratton Mills, who joined the party from the Ulster Unionist Party (UUP) in 1973. However, the DUP regained the seat at the 2015 general election following an electoral pact with the UUP, leaving the Alliance Party