Dan Smith won his first gold medal for swimming in school competition at the age of 5. In his early teens he was compared to the great Australian swimmer, Ian Thorpe, after breaking several of his age records. The world was at his feet but in his late teens he turned his back on sport and took to a life of excessive drinking, drug abuse and crime and ended up living on the streets. In this interview recorded at the recent Olympic Games in Rio, Dan told reporter Tom Ellis how he turned his life around and rediscovered his love of swimming to compete at the Olympic Games.