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
Barnsley West and Penistone (UK Parliament constituency) Labour Party. The first general election in this constituency was won by Allen McKay, who had been the MP for the abolished Penistone constituency since 1978. ! style="background-color: " | Barnsley West and Penistone (UK Parliament constituency) Barnsley West and Penistone was a parliamentary constituency in South Yorkshire which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first-past-the-post voting system. It was considered a safe seat for the Labour Party. The Borough of Barnsley wards of Darton, Dodworth, Hoyland East, Hoyland West, Park, Penistone East, Penistone West,