London Prize stayed on strongly to run out a game winner of the Matchbook Imperial Cup Handicap Hurdle at Sandown.Fit from a confidence-boosting run on the Flat following a fall in his last race over hurdles, the Ian Williams-trained six-year-old put his speed to good use as he pulled away from his rivals on the run-in.Darebin set sail for home over two out after Bigmartre had made the running, but he was reeled in by London Prize (10-1) and Fixe Le Kap.And it was London Prize. ridden by Tom O'Brien, who proved the stronger to get the verdict by a length from the 5-1 favourite.Darebin (25-1) was another three and a half lengths away in third.O'Brien said: "London Prize is a lovely horse and I was delighted to get the call-up to ride him."He's very progressive and battled it out nicely."