Peter Walker

Peter Walker is a political correspondent for the Guardian in London, and a regular commentator and broadcaster on issues including politics, active living and health.

He first became fascinated by the impact of everyday exertion when, as an inactive and badly asthmatic early 20-something, he gave up a secure graduate desk job to become a bicycle courier in London and then Sydney. The change of profession, including a brief period wearing a skintight, hot-pink Lycra company jersey, transformed his life and health.

His first book, Bike Nation: How Cycling Can Save the World, explained how rebuilding towns and cities for everyday cycling makes them healthier and more equal.

As a journalist, he has also worked for Press Association, Agence France-Presse, CNN and others, reporting from places including China, Iraq and North Korea.