Legendary Irish trainer Aidan O’Brien and his teenage son Joseph made history as Camelot moved a step closer to flat racing’s Triple Crown with a stunning win in the English Derby at Epsom.

The pair became the first father and son partnership in history to win the biggest race of the flat calendar to add the Derby to the 2000 Guineas title.

Now a tilt at the St Leger and the treble awaits for the horse brilliantly steered home by 19-year-old Joseph to the delight of his watching father,

Joseph was happy to sit towards the rear for much of the mile-and-a-half journey, beginning to make headway on the outside of the field rounding the home turn before a burst of speed that secured a five-length success.

Winning jockey Joseph said: “I was a bit worried as he didn’t come down the hill at all. He didn’t handle the track that well, so he did well to win.

“He’s a very special horse and I’m just very fortunate to be on his back.”

Trainer Aidan O’Brien said: “You can’t even dream of days like this.

“I was always happy, I know Joseph’s body language by now and he looked confident.

“No-one can describe the feeling, things like this don’t happen. We’ll give the Triple Crown a lot of thought and the boys will make a decision and do whatever is best for the horse.

“The Triple Crown would be incredible.”

Irish trainer Aidan O'Brien and son JosephAFP