UK Labour Membership Plummets by Nearly 200,000 Under Keir Starmer

Labour has lost almost 200,000 members in the past five years, with membership steadily falling since Sir Keir Starmer took over in April 2020. The party’s membership dropped from a peak of 532,046 at the end of 2019 to 333,235 by the end of last year, shedding 37,215 members in 2024 alone. Despite its landslide election victory, supporters say membership tends to fluctuate around elections. Labour remains the UK’s largest political party.