The host chats to double Olympic gold medallist Mo Farah about his recent triumphs in the 5,000m and 10,000m at London 2012. Rapper and actor Plan B discusses his starring role in new film The Sweeney alongside Ray Winstone, and performs in the studio. Model-turned-actress Rosie Huntington-Whiteley (Transformers: Dark of the Moon) and choirmaster Gareth Malone also talk about their latest projects.