The quest to find the source of the Thames

Having explored the 'official' source of the Thames near Cirencester, the team head north along another tributary that may hold a secret about England's most famous river

Unknown-3

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. If true, it would make the Thames the longest river in the British Isles.

Advertisement

But there’s a further surprise in store. Listen on to find out how they got on.