Michael Mosley puts himself through a battery of health tests available to people who feel perfectly well. From an expensive heart scan to a new national screening procedure to detect the earliest signs of bowel cancer, Mosley sets out to discover which if any of the tests are worth doing.

Clare Balding and Steve Leonard join teams of pioneering vets around the world who are using the most cutting-edge techniques, often adapted from human medicine, to save the lives of animals.