He Knows No Fear made history at Leopardstown this afternoon when becoming the longest priced winner in Ireland and Britain, springing a 300/1 shock in the Irish Stallion Farms EBF Maiden.

The Luke Comer-trained colt had made little impression on his debut at Limerick last month after missing the kick, beating just two home.

He left that form well behind this afternoon as he powered home under Chris Hayes to pip even-money favourite Agitare at the post in the mile contest.

The three-year-old was a first winner for sire Mourayan, a Group 1 winner in Australia.

Assistant trainer Jim Gorman said:- “He got left half a furlong in Limerick so we didn't really know after it and because some of our horses weren't in great form at the time we backed off them.

“Going to Limerick we thought he was a real nice horse but he got left so far we couldn't get any kind of guide to him.

“It was great as it's one of Luke's own stallions and his own mare. That gives him the greatest thrill, to breed his own.

“We had a few quid on him each-way in Limerick but he broke so badly and was left in the stalls that day so we didn't really know.

“All our horses have been running well in the last few weeks and knocking on the door without winning so it's just great to get a winner.

“Today was a learning curve for us with him so we'll see what the handicapper does and see where we got from there.

“He's a work in progress and is going to improve because he was a bit green.”

The previous highest winning SP was 250/1 when Equinoctical was successful at Kelso in 1990.

Killahara Castle was the previous record holder in Ireland, winning at 200/1 at Thurles in December 2017.