Hugh Ernest Leo Williams, known professionally as John Williams, was an English stage, film and television actor. He is remembered for his role as Chief Inspector Hubbard in Alfred Hitchcock's Dial M for Murder, as the chauffeur in Billy Wilder's Sabrina (both 1954), as Mr. Brogan-Moore in Witness for the Prosecution (1957) and as the second "Mr. French" on TV's Family Affair in its first season (1967). Wikipedia