Chambers' drugs cocktail

DWAIN Chambers will confess to anti-doping chiefs today that he was on an astonishing cocktail of seven banned drugs in 2003.

The British sprinter tested positive for the designer steroid THG in August of that year, and received a two-year ban. But it has now been revealed he was also taking human growth hormone, the blood-boosting drug EPO, insulin, a testosterone/epitestosterone cream, a drug called modafinil used to promote alertness, and finally liothryonine, a synthetic form of thyroid hormone.

Chambers is meeting UK Sport's anti-doping chief John Scott today as part of his campaign to come clean. He will provide Scott with an explosive letter written by his American drugs supplier Victor Conte detailing his actual drugs use.

"This was the most sophisticated doping programme in the history of sport," Conte told the BBC.