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
Orkney and Shetland (UK Parliament constituency) in having its boundaries protected by legislation. The constituency has the second smallest electorate of any UK parliamentary constituency, after Na h-Eileanan an Iar. The constituency has elected only Liberal and Liberal Democrat MPs since 1950; the longest run of any British parliamentary constituency.At each general election from 1955 until 1979, in 1987, 2010 and again in 2017 it was the safest Liberal Democrat seat in the UK. At the May 2015 general election, it was the only seat in Scotland to return a Liberal Democrat MP. Two years later, in 2017, the Lib Dems gained three more seats in