Green Party Membership Numbers: Latest UK Tracker and History
This page tracks Green Party membership numbers in the UK, with the latest recorded figure, a live chart of growth over time, and comparisons with Reform UK and Restore Britain. It is designed to answer the core search query directly: how many Green Party members are there right now, and how has that changed over time?
How Many Green Party Members Are There Today?
As of 6 March 2026, the latest recorded Green Party membership number is 216,000. That makes the party one of the largest political parties in the United Kingdom by membership. The tracker above shows how Green Party membership numbers have changed from late 2023 onward using publicly reported figures and verified sources.
Green Party Membership Growth Timeline
The Green Party membership history reveals several key phases of growth:
- December 2023 – June 2024: Steady baseline of around 53,000–55,000 members, reflecting the party's established support base.
- March 2025: Membership begins climbing to 60,000, signalling the start of an acceleration driven by increased public awareness of climate issues and disillusionment with mainstream parties.
- September – October 2025: An extraordinary surge takes membership from 68,500 to 140,000 in just eight weeks — a period of explosive growth unlike anything seen in UK politics.
- Late 2025 – Early 2026: Continued strong growth through 180,000 (December 2025) to pass the historic 200,000 milestone in March 2026.
Green Party vs Reform UK Membership Comparison
While Reform UK currently leads in raw membership numbers with over 275,000 members, the Green Party's rate of growth has been remarkable. The gap between the two parties has been narrowing steadily, and at current trends, the Green Party could overtake Reform UK in total membership. This tracker allows you to compare both parties' membership trajectories side by side.
Why Are Green Party Membership Numbers Growing?
Several factors have contributed to the surge in Green Party membership numbers:
- Climate urgency: Growing public concern about climate change and extreme weather events has driven voters toward the party with the strongest environmental credentials.
- Electoral success: The Green Party's breakthrough in winning four MPs at the 2024 general election demonstrated electoral viability and attracted new supporters.
- Policy platform: The party's comprehensive manifesto addressing wealth inequality, public services, and the green economic transition has resonated with a broad coalition of voters.
- Community organising: Grassroots campaigns and local election wins have built momentum in communities across England and Wales.
About This Tracker
The Green Party Membership Tracker is an independent project that collates publicly available membership data to provide a transparent, accessible record of Green Party membership over time. Green Party data is sourced from official party announcements, press releases, and verified reports. Reform UK and Restore Britain membership data is pulled from Lowe Tracker's public membership API, with local archive fallbacks used if that feed is unavailable.
This tracker is updated regularly to ensure accuracy. If you have verified membership data that should be included, please get in touch.
FAQ: Green Party Membership Numbers
What are the latest Green Party membership numbers?
The latest recorded figure on this tracker is 216,000 members, recorded on 6 March 2026.
Where do these Green Party membership numbers come from?
They are compiled from public announcements, press releases, official statements, and other verified reports.
Does this site show Green Party membership history?
Yes. The chart and milestone sections show Green Party membership numbers over time so readers can track momentum rather than just a single headline figure.