Zack Polanski has remained Green Party of England and Wales leader since his September 2025 election, but faces sustained internal pressure following the October 2026 Holborn and St Pancras by-election defeat and a party conference motion declaring Zionism a form of racism. Senior figures, including the Jewish Greens chair and former leaders, criticized his handling of the motion and absence from the vote, prompting resignation calls and local coalition strains with Labour. Polanski has publicly committed to staying and advancing governance reforms to address membership growth and decision-making processes, with initial changes slated for a spring conference vote. These divisions and the party’s internal democracy rules continue to shape assessments of any near-term leadership transition.