In this episode, Nadina meets Mark Cridge just off Oxford Circus, inside a quiet, plant-filled HQ that serves as the visitor centre for something radical: a city that calls itself a park. London was the first place in the world to become a National Park City—but what does that actually mean when you’re standing in the middle of one of the busiest urban intersections on Earth?

Mark shares the story behind the National Park City idea, from the map that rewired how London sees itself to the moment the city formally embraced a new identity as a living landscape. We talk about how over 50% of London is already green and blue space, why perception matters as much as policy, and how reframing a city can unlock entirely new conversations about health, belonging, biodiversity, and the future of urban life.

At the heart of the movement are the community Rangers—ordinary people running extraordinary local projects, from tracing hidden fruit trees across neighbourhoods to turning allotments into spaces of healing, mental health support, and connection. Together, we explore how these small, human-scale interventions quietly reshape entire neighbourhoods from the ground up.

We also dig into the deeper questions beneath the movement: the global collapse of human connection to nature, why teenagers so often lose that bond, what it means to raise nature-connected children in dense cities, and whether cities—rather than rainforests or remote wilderness—may now be the most important battleground for reconnection.

This is an episode about maps, movements, rights to grow and swim, and what happens when a city stops treating nature as decoration and starts treating it as its backbone.