The actor and television presenter embarks upon a 200-mile journey from source to sea to discover what makes the Thames one of the greatest rivers in the world.
Nature79%
Natural World74%
Prehistoric Planet82%
The Reluctant Traveller with Eugene Levy74%
Doctor Who Confidential81%
How Do They Do It?76%
Planet Earth86%
NOVA70%
Planet Earth III85%
The Secret Life of Our Pets74%
Planet Earth II86%
Earth at Night in Colour81%
Biography67%
Our Planet85%
Michael Palin: Around the World in 80 Days75%
Dynasties83%
Horizon73%
Animal80%
Through the Wormhole76%
Baseball75%