Best known for his appearances on British television in the comedy series _"Father Dear Father" . The two actors struck up a close friendship. A superb light comedian Cargill said "Comedy is instinctive. You know it's there but the moment you consciously search for it you're completely lost. Timing is a skill that you develop over the years. It gives you the necessary courage to wait - to pause while the audience gathers in anticipation."
He was the first actors to play the same character in two British television series. He played Miguel Garetta in both "Top Secret" and "No Hiding Place" .
Gained acting experience in Dundee Repertory Theatre.
