Friday interview - @GregJRutherford on doping, dealing with online trolls and DNA testing

British long jumper, Greg Rutherford has won everything in his field... including world, commonwealth, and European titles. But it was his gold at the 2012 Olympic games in London which thrust him into the spotlight. And he has been there ever since. In a wide ranging interview I spoke to him about recent criticism from Carl Lewis, doping, dealing with online trolls... and his use of DNA testing to improve performance. He starts by telling Stephen what it's like to break records.