"To be honest, from where I was standing I wasn't sure if he had won, but thankfully he stuck his neck out,” assistant trainer Thady Gosden said.
“He was three wide the whole way and tried his heart out and considering the second horse is a Royal Ascot Group One winner, it was pretty stiff competition."
Kick On has now won on four occasions including two black type events, having previously won the Listed Feilden Stakes at Newmarket on his seasonal return.
"He went to post bright and relaxed,” jockey Oisin Murphy said. “John (Gosden) has spent time freshening him up and he was in really good order today. The horse was giving his all and even if we'd got beaten, there'd have been no complaints. With an attitude like his, he is bound to win more big races.”