Cast & crew
The Secret Service (1969)
Cast
| Stanley Unwin | Father Stanley Unwin (voice) |
| Gary Files | Matthew Harding / Various Characters (voice) |
| Jeremy Wilkin | The Bishop / Various Characters (voice) |
| Sylvia Anderson | Mrs Appleby / Various Characters (voice) |
| David Healy | Various Characters (voice) |
| Keith Buckley | Agent Blake / Various Characters (voice) |
Crew
| Reg Hill | Executive Producer |
| David Mitton | Special Effects |
| David Lane | Producer |
| Barry Gray | Music |