One of Britain’s fastest men is calling time on his career, aged 32. He tells Lawrence Ostlere about his favourite night at the World Championships, his one Olympic regret and his new job at Chelsea Get the free Morning Headlines email for news from our reporters across the world Sign up to our free Morning Headlines email Sign up to our free Morning Headlines email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice A dam