Labour Party membership has sunk to its lowest level in a decade under Sir Keir Starmer’s leadership, figures reveal. The party lost 37,000 members last year, bringing its total membership at the end of 2023 to 370,450, according to Labour’s official accounts. The figure marks a new low for Labour membership under Sir Keir, compared to 532,000 members recorded in 2019 when Jeremy Corbyn was leader.