A second Newmarket-based trainer has admitted to the British Horseracing Authority that he administered banned anabolic steroids to racehorses on the advice of his vets.
Last week Godolphin trainer Mahmood Al Zarooni had his licence revoked for eight years by the BHA for doping racehorses.
Eleven horses, trained by Al Zarooni for Dubai ruler Sheikh Mohammed bin Rashid al-Maktoum, tested positive for anabolic steroids, including stanozolol. Emirati Al Zarooni also admitted administering prohibited substances to four other horses.
Gerard Butler says that medication known as Sungate, a treatment for injured joints which contains stanozolol, had been given to several horses at his stables in Newmarket, southern England - the headquarters of British flat racing.
He says Sungate was recommended by his vets and that he was told it may have been prescribed to as many as 100 racehorses trained in the town.