John Clegg, best known for his role as Gunner Graham in the BBC sitcom, It Ain’t Half Hot Mum, has died ‘peacefully’ at age 90, and fans are heartbroken. Beginning his acting career way back in 1961 in the show Dixon on the Dock Green, John Clegg was known as a ‘TV veteran’, who everyone loved. Through his work in comedy series’ he became popular with fans all over, constantly providing them laughter whenever he was on the screen. His other notable role was in the comedy movie Dad’s Army. And now, after his incredible and lengthy career, the world has lost another acting hero. Fans left devast…