Top Notch Tonto has been supplemented at a cost of £70,000 to what remains a top-notch field of milers for Saturday's Queen Elizabeth II Stakes at Ascot.

Aidan O'Brien dominated the Curragh undercard on Irish Oaks day when he completed a treble highlighted by a most impressive success for American import Darwin in the Invesco Pension Consultants Minstrel Stakes.

Dawn Approach leads a field of 13 declared for the Qipco 2000 Guineas at Newmarket on Saturday.