- Jack Kemsley
- visual effects second unit electronic developer (32 episodes, 1967-1968)
- Peter Wragg
- visual effects second unit director (32 episodes, 1967-1968)
- Derek Meddings
- supervising visual effects director / visual effects supervisor (28 episodes, 1967-1968)
- Ted Wooldridge
- visual effects lighting cameraman: second unit / visual effects second unit lighting camera (23 episodes, 1967-1968)
- Les Paul
- visual effects lighting cameraman: second unit / visual effects lighting cameraman / visual effects second unit lighting camera (20 episodes, 1967-1968)
- Brian Burgess
- visual effects production manager (18 episodes, 1967-1968)
- Shaun Whittacker-Cook
- visual effects director (17 episodes, 1967-1968)
- Jimmy Elliott
- visual effects director (15 episodes, 1967-1968)
- Bert Mason
- visual effects lighting cameraman / visual effects lighting camera (15 episodes, 1967-1968)
- Harry Ledger
- visual effects production manager (14 episodes, 1967-1968)
- Noel Rowland
- visual effects camera operator: second unit (12 episodes, 1967-1968)
- Ted Cutlack
- visual effects camera operator: second unit (9 episodes, 1967-1968)
- John Shann
- visual effects camera operator: second unit (6 episodes, 1967-1968)
- Harry Oakes
- visual effects lighting cameraman (5 episodes, 1967-1968)
- Tony Bell
- dialogue synchronizer (1 episode, 1967)
- Derek Black
- visual effects lighting cameraman (1 episode, 1968)