Heroes movie premiere: Motorsport stars turn out for London event

The stars of Heroes - Mika Hakkinen, Felipe Massa, Tom Kristensen and Michele Mouton - plus special guests including Bernie Ecclestone and Jean Todt, share their thoughts at the London premiere of the film. We also hear from Manish Pandey on the challenge of weaving together so many stories, plus the narrative of the film's missing guest, Michael Schumacher