The Queen's horse Estimate has been stripped of its second place finish in the Gold Cup in June following a positive drugs test, a British Horseracing Authority (BHA) hearing has ruled.
The post-race sample containing the prohibited substance morphine was the result of contaminated feed and the Queen's trainer Sir Michael Stoute will not face a financial penalty.
The BHA was satisfied all reasonable precautions were taken to avoid any breach of the rules.
But the rules of racing state that horses producing a positive sample for a prohibited substance should be disqualified from the relevant races.
Another horse trained by Sir Michael also tested positive for morphine after running, like Estimate, at Royal Ascot and was disqualified from its ninth place in the Buckingham Palace Stakes.
