Labour lost 37,000 more members during 2023, leaving its total membership at 370,450 at the end of the year.

Although it still has the most members of any UK party, the figure is significantly down from a peak of 532,046 at the end of 2019.

The Liberal Democrats saw their membership fall by around 11,000 to 86,599, though the party said it had seen a rise in new members since its gains in July’s general election.

The Conservatives do not publish membership figures, but their income from membership fees fell from £1.97m to £1.5m.

However, the Green Party saw its membership remain stable at around 53,000.

Reform UK said its membership had grown “significantly”, although it did not publish figures.
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In a turbulent year for the Scottish National Party, which saw the resignation of Nicola Sturgeon as leader and an ongoing police investigation into the party’s finances, its membership fell by around 18,000 to 64,525.