A 27-metre platform perched above the Doha Old Port was Aidan Heslop’s launchpad for a first high diving world championship title which one day the young Team Wales star hopes may be a milestone on the way to an Olympic gold. Heslop’s final dive on Thursday was a thing of vertiginous beauty – a forward launch, four somersaults and three-and-a-half twists pike rated the toughest in the business.