Jack Watson , was an English actor who appeared in many British films and television dramas from the 1950s onwards.
Watson was born in Thorney, Cambridgeshire, the son of a Gaiety Girl, Barbara Hughes, and music hall comedian, Nosmo King, with whom he often appeared on stage as straight man, known simply as Hubert. During the Second World War, he was a physical training instructor in the Royal Navy, and his physique was much in evidence in many of his subsequent screen roles. During the war he was resident compre of Navy Mixture.
Source: Wikipedia