PANORAMA: SPORT'S HIDDEN CRISIS

Colin Jackson investigates the hidden world of eating disorders in British sport. Speaking to athletes from amateur to elite level, he discusses his own problems with food when he was an Olympic hurdler and asks why those involved in sport are far more likely to have an eating disorder than the rest of the population. Speaking to the Chair of UK Sport, Dame Katherine Grainger, he asks, what the authorities should be doing to tackle the problem.