- Sally Debonnaire
- head of production (6 episodes, 2000)
- Alexandra McLeod
- program associate (6 episodes, 2000)
- Rebecca Neale
- researcher (6 episodes, 2000)
- Georgina Warrington
- production runner (6 episodes, 2000)
- Sue Broom
- pig handler (1 episode, 2000)
- Charlotte Cinalli
- production coordinator (1 episode, 2000)
- Carol Jones
- lizard handler (1 episode, 2000)
- Andy Little
- attending vet (1 episode, 2000)
- David London
- pig handler (1 episode, 2000)
- Trevor Smith
- lizard handler (1 episode, 2000)
- Ian Wills
- lizard handler (1 episode, 2000)
- Morag Webster
- unit nurse (uncredited) (6 episodes, 2000)