**Zack Polanski remains Green Party of England and Wales leader as of early September 2026, one year after winning the post in a September 2025 landslide (84% of votes) on an “eco-populist” platform.** Under his leadership the party has tripled membership to over 230,000, secured its first Westminster by-election win (Gorton and Denton), gained record council seats, and achieved strong local results, including in London. Recent developments include scrutiny over an impermissible donation that was returned, questions about his primary residence and council tax, CV claims, and handling of internal anti-Semitism concerns and policy motions. These contributed to a reported drop in party net approval ratings. Polanski is now actively seeking selection as the Green candidate for the high-profile Holborn and St Pancras by-election triggered by Keir Starmer’s resignation, framing it as a referendum on cost-of-living issues. Local party members have signaled support, with formal selection expected shortly. No public statements or procedural moves indicate an imminent leadership challenge or resignation. Trader sentiment on an early exit likely reflects the contrast between sustained organizational growth and localized controversies, alongside the party’s positioning ahead of the by-election and future general election dynamics.