Excelebration has finally enjoyed his moment of glory, romping away with the Queen Elizabeth II Stakes at Ascot.

Dismissed five times by Frankel, including in QEII 12 months ago and by 11 lengths at Royal Ascot in the summer, the Aidan O'Brien-trained four-year-old gained his first Group One success in Britain, and third in all, with a superb victory to confirm himself a top-class miler in his own right.

Although he had to wait for the gaps to come, when they did the 10-11 shot powered clear in the hands of Joseph O'Brien to win easily by three lengths from Cityscape, with Elusive Kate 3-1/4 lengths away third.

The Queen's colt Carlton House finished on the heels of the placed horses in fourth.

"We are delighted. He's been working brilliant. He's got an awful lot of speed and class, and Joseph was confident," O'Brien said.

"If he's OK and everybody is happy we'll go to the Breeders' Cup."

Excelebration is in his first season with O'Brien having formerly been trained in Newmarket by Marco Botti.

"He was a good two-year-old and three-year-old and it has taken us a while to get to know him," O'Brien said.

"When we ran against Frankel in the Queen Anne we tried to match strides with him and that was the wrong thing to do. Speed is his forte and he probably did well to be second that day."

O'Brien said a decision on whether Excelebration stayed in training next year had not yet been made.

"The better he gets the more the boys want him (for stud)," he said.

"It's something we will have to discuss at the end of the year."