Tom Aggar: A budding rugby player, Aggar was on a night out in 2005 when he slipped and fell eight feet onto a concrete path. His friends thought he had gone home but he lay there unconscious for two hours before calling an ambulance. He broke his back and suffered a spinal injury which left him paralysed in both legs. He has since become the world's No.1 sculler, with gold in Beijing and four world titles to him name.