The Labour Party had 264,754 members in 2025, according to its newly published annual accounts, marking a steep decline from the more than 500,000 members it counted during the late 2010s.
According to POLITICO, the figures illustrate the continued contraction of Labour’s grassroots membership under Prime Minister Keir Starmer, who has reshaped the party since becoming leader in 2020.
Labour’s membership reached record levels during Jeremy Corbyn’s leadership, making it one of Europe’s largest political parties. Since then, however, membership has steadily declined amid internal reforms, disciplinary disputes, and ideological realignment.
Despite the shrinking membership base, Labour returned to government after winning the 2025 general election, suggesting that electoral success has not translated into renewed grassroots growth.
Labour’s declining membership comes in stark contrast to that of the left-wing Green Party, which claims its membership grew from 68,000 in September 2025 to more than 200,000 in March 2026. Many are likely to be former Labour members.
The Conservative Party does not release membership numbers, but its accounts show that its income from members dropped from £ 2.1 million in 2024 to £ 1.7 million in 2025.
