Ray returns to one of his favourite and wildest places in Britain, Dartmoor, travelling across granite peaks and mysterious oak forests, searching for the country’s largest ground beetle and the elusive wood warbler. He also visits High Willhays, the highest point in the National Park, and explains its rugged appeal.

Ray visits Thames Path where he journeys by canoe along the mighty River Thames from Oxfordshire to London, finding kingfishers and water voles along the way, and camping in one of the world’s most precious and exclusive woodlands.

Ray is in Snowdonia where he finds out how in the rugged landscapes around Britain's highest mountain forms of wildlife survive against all the odds, and can only be seen in this very special part of Wales.

Ray visits Galloway and explores the riches of the stunning South West of Scotland coast and the hidden treasures that live in Britain’s largest forest park - including the rare and elusive pine marten.

Britain's wildest places. In this edition, Ray follows the River Derwent to the breathtaking Borrowdale valley - home to ancient rainforests and some very special wildlife.

In the final programme in the series, Ray crosses over the sea to the magificent Isle of Skye. There he goes in search of Britain's rarest bird of prey - the spectacular sea eagle.