< Australia completed the big Epsom-Curragh double with a display of effortless class to take the Dubai Duty Free Irish Derby.

With main rival Kingston Hill a non-runner because of the quick ground, Aidan O'Brien's colt was sent off the 1-8 favourite and was settled in third place as his stable companions Kingfisher and Orchestra led the way.

Joseph O'Brien eased up towards the leaders at the two-furlong pole and passed them with almost ridiculous ease a furlong out before cruising to victory by two and a half lengths, with Kingfisher holding on to second in a clean sweep for the yard.

The father and son team also won with Giovanni Boldini (8-13 favourite), who was given a confident ride before being pulled wide to cut down the opposition in the Listed Dubai Duty Free Millenium Millionaire Celebration Stakes, scoring by three-quarters of a length.

It completed a treble for O'Brien senior, who also struck in the Group Three Dubai Duty Free Finest Surprise Sapphire Stakes when 14-1 outsider Fountain Of Youth responded to Seamie Heffernan 's every call in first-time blinkers to edge out Extortionist by a head.< Kool Kompany (6-1) reversed Royal Ascot form with Cappella Sansevero and War Envoy in no uncertain terms in the Group Two GAIN Railway Stakes.

Fran Berry darted across to grab the rails berth and led all the way on Richard Hannon's colt, who found plenty from the front in the final furlong to race two lengths clear of another British raider, Ahlan Emarati < Line Of Reason (18-1) hit the front travelling powerfully a quarter of a mile out in the Paddy Power Scurry and dashed clear under Leigh Roche to win by half a length for Yorkshire handler Paul Midgley. The jockey later doubled up on Dermot Weld's Sparkle Factor (7-2 joint-favourite).

Tommy Stack's newcomer Accepted (13-2) was always in the firing line under Wayne Lordan in the Dubai Duty Free Full Of Surprises EBF Maiden and put up a stout fight when strongly challenged by the favourite Cape Clear Island holding on by a short head.