William Buick was in dreamland after landing his first Classic success aboard Arctic Cosmos in the Ladbrokes St Leger at Doncaster on Saturday.

The 22-year-old, who lived at Letcombe Regis, near Wantage, with his father, Walter, before becoming retained jockey to Newmarket trainer John Gosden this season, powered the 12-1 chance home by a length and three-quarters from Midas Touch (13-2), with Corsica (40-1) a nose back in third.

“It’s unbelieveable,” he beamed. “To win a Classic is what everyone wants to do, and it has been my dream since I got into racing.”

Gosden’s charge was wearing blinkers for the first time.

And Buick said: “He has been dossing all year. He is still a big baby and we just put the blinkers on him to sharpen him up and to make him concentrate.”