George made his first proper film in 1934 "Boots, Boots" - and started off as a live entertainer in 1921 - so he had a dozen years or so on the boards before the films came along and made him. He suffered his first heart attack in 1952, during the run of his successful stage musical "Zip Goes a Million." He withdrew from the show, and confined his performances to occasional guest appearances on stage and TV.

Reading between the lines here, it suggests to me that George's live performances were probably far less frequent after the film successes but, without evidence from theatre bills, etc., it's difficult to say.