After last episode's adventure finding the official source of the River Thames near Cirencester, the team head north deeper into the Cotswolds in search of the beginnings of the River Churn, which some people believe is the true source of England's greatest river. But there's a further surprise in store. Listen on to find out how they got on. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.