Britain’s Got Talent warm-up act Ian Royce has died aged 51 from pneumonia and multiple organ failure.The compere - who checked into rehab in November 2019 to be treated for alcoholism - was well known behind the scenes on the ITV talent show for his work warming up the audience before the cameras rolled.Royce’s daughter Roxanne announced on his official Twitter account: “It is with our greatest regret that we have to tell you all that Ian has passed away today from severe pneumonia and multiple