He was held up near the rear of the field in the early stages of the race, but progress through the pack to take the lead inside the final furlong, going on to win by two lengths from pre-race favourite Oklahoma City.

He took the lead with over one furlong still to run and pulled clear to win by four and a half lengths from the Aidan O'Brien-trained colt Johann Strauss.

He was held up in the early stages and, despite making some progress in the final quarter mile, never threatened the leaders, finishing eighth behind Night of Thunder.

On 7 June, Kington Hill started the 15/2 second favourite for the 235th running of the Derby over one and a half miles at Epsom Downs Racecourse.

[12] On 5 July, Kington Hill was matched against older horses for the first time in the Eclipse Stakes at Sandown Park Racecourse.

Ridden by Frankie Dettori he was restrained in the early stages before making progress in the straight, but was unable to catch the leaders and finished fourth behind Mukhadram, beaten four lengths by the winner.

It was expected that the colt would run next in the Great Voltigeur Stakes at York Racecourse, but as in Ireland, he was withdrawn on account of the firm ground.

On 13 September, Kingston Hill started 9/4 favourite for the St Leger at Doncaster, despite doubts about his ability to cope with the firm ground.

Kingston Hill hung left towards the rail as he made his challenge and appeared to impede the run of Snow Sky, but after a stewards' inquiry the result remained unaltered.

He remained among the leaders throughout the race and kept on well in the closing stages to finish fourth of the twenty runners behind Treve, Flintshire and Taghrooda.

In March 2015 it was announced that Kingston Hill had sustained an injury to his left foreleg and would miss the first half of the season.