From submarine workers to hill farmers, Simon Reeve meets the people of Cumbria, revealing new insights into this stunning corner of Britain.

The Lake District is the biggest national park in England. Made famous by poet William Wordsworth, its rugged beauty holds a unique place in British life. But it’s also at the heart of many crucial issues facing the world – from development to sustainability and climate change. Simon Reeve meets the Lake District’s most fascinating characters, finds out about the threats to its fragile wildlife and visits some of the spectacular and controversial energy projects located within its borders.