The biggest problem facing sport, says Olympic Champion Sebastian Coe, is the growing use of drugs.

It's not just cheating; it can kill and it's big business. A former British track star is in America facing charges of dealing in counterfeit steroids and there's a multi-million-pound black market in Britain too.

With ministers next week discussing tougher controls, John Penycate talks to the dealers and the users of 'gear'. He reports on how athletes beat the tests with new drugs and techniques like 'blood doping' and asks, are the governing bodies of sport turning a blind eye to those who may be dying to win?