Membership of UK political parties

As of July 2019, Labour had 485,000 members, compared to the Conservatives, who had 180,000 members. The SNP had around 125,500 members (December 2018), the Liberal Democrats 115,000 (August 2019), Green Party 48,500 (July 2019), UKIP 29,000 (April 2019) and Plaid Cymru 10,000 (October 2018). Party membership has risen notably since 2013, both in total and as a percentage of the electorate.

This briefing paper will be updated as further information on party membership levels becomes available.