By City A.M. Reporter Some of the world’s biggest gambling firms are set to reveal whether they have cashed in on a set of major global sporting events, as they prepare for new rules for bookies in the UK. Flutter Entertainment, which owns a swathe of brands including Betfair, FanDuel and Paddy Power, will update investors on its financial performance on Tuesday. William Hill and 888 owner Evoke will publish its half-year results on Thursday. It follows rival gaming group Entain revealing that it benefited from Euro 2024 with a slew of football results going in the bookmaker’s favour. The tour…