Sadiq Khan is about to complete 10 years as London’s mayor. He’s seen the city affected by Brexit, the pandemic and two energy crises. That hasn’t deterred him from deploying some of the strongest air-quality regulations in any city. But he hasn’t yet succeeded in getting enough homes built and struggled to keep improving the train network. As cities keep growing, Khan talks to Akshat Rathi about lessons from London’s successes and failures. As a prominent member of the UK’s Labour Party, Khan also shares his thoughts about the future of the party. The interview was recorded on April 16.

Zero is a production of Bloomberg Green. This episode was produced by Chris Martlew, Jessica Beck, Andy Hayward, Sommer Saadi and Oscar Boyd. Special thanks to Meaghan Olsen, Mohsis Andam, 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.