He was voiced by John Tate.
- The puppet that plays Sir Harry also appears in the movie Thunderbirds Are Go as one of the members of the SE Board during the meeting at the Space Exploration Center, and as a reporter at the press conference (?). In Move And You're Dead it plays the parking attendant at Parola Sands Raceway. In The Impostors it plays the Colonel who visits Tracy Island. In 30 Minutes After Noon it appears as Garfield.