Countryfile is in Cambridgeshire. Ellie Harrison takes a sneak peak behind the scenes at Newmarket, the home of horse racing. She finds out what it takes to maintain the course and meets some of the jockeys of the future. In the north of the county, John Craven is on a literary journey in the village of Helpston. It was the home of one of our greatest countryside poets; John Clare wrote about the landscape around him. John Craven explores his countryside and discovers why Clare never received the critical acclaim of his contemporaries. But John Clare wasn't the only unsung hero to have called this place home; James Wong finds out about a little-known but crucially important Victorian naturalist - Rev Leonard Jenyns - who devoted his life's work to the flora and fauna of Cambridgeshire. For a lot of people, the British countryside is a playground; a beautiful landscape where we can satisfy our need for peace and relaxation or our hunger for adventure. Tom Heap investigates whether its popularity is in danger of ruining the natural world that we love. Down on Adam's farm, the fields are buzzing with new life, but some of the new arrivals need a helping hand.