Zack Polanski is challenging the notion that you can’t be Green and a popular politician. Since he became the leader of the UK’s Green Party in September 2025, he has run a campaign that’s pushed his party ahead of the incumbent Labour Party and opposition Conservative Party in some polls. It’s a remarkable rise in a short span of time – how did he pull it off and what will he do if the Green Party gets into power?

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• Watch this interview on YouTube
• Zack Polanski Is Making the Once-Fringe Greens a Political Force — Bloomberg

Zero is a production of Bloomberg Green. This episode was produced by Oscar Boyd and Jessica Beck. The video version was edited by Meaghan Olsen. Our theme music is composed by Wonderly. Special thanks to the Bloomberg TV team, Isobel Finkel, Olivia Rudgard, Lucy White, Ellen Miligan, Sommer Saadi, Laura Millan and Sharon Chen. Thoughts or suggestions? Email us at zeropod@bloomberg.net. For more coverage of climate change and solutions, visit https://www.bloomberg.com/green.