Justin Lee Collins is terrified of heights. But, armed with a tiny set of Speedo’s and an equally small amount of bravado he’s prepared to take on the World Diving Series in Sheffield. With careful mentoring we’ll see a portly man tackle gymnastics, acrobatics and most tellingly: crippling fear. How high he goes, who knows? The one-metre board, the 3, the 5, or (heaven forbid) the high-board 10 metre monster? Watch and find out.