Green party membership in UK passes 200,000 after byelection victory

The Guardian - World NewsEN 2 min read 100% complete by Rowena Mason Whitehall editorMarch 1, 2026 at 03:27 PM

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The UK Green party's membership has surpassed 200,000, tripling since September 2023, following their recent byelection victory in Gorton and Denton. This win marks the Green party's first national byelection victory, pushing Labour into third place. Green party leader Zack Polanski attributes the surge to a rejection of "managed decline" and "timid politics," positioning the Greens as a replacement for Labour. While Labour's membership numbers are debated, with some estimates placing them below Reform UK, the Green's growing membership is causing concern among some Labour figures as it could impact local election results. The Green party now has five MPs and is polling competitively with other major parties.

Key Entities & Roles

Key Player Opposition Context

Jeremy Corbyn 30% United Kingdom 40% Liberal Democrats (Lib Dems) ×250% Conservative Party ×250% Reform UK ×360% Hannah Spencer ×260% Gorton and Denton ×370% Zack Polanski ×370% Labour Party ×880% Green Party ×790%

Keywords

green party 100% membership surge 90% byelection victory 80% progressive politics 70% labour party 70% political turning point 60% uk politics 50% voter base 50% reform uk 40%