• 
  Mark Williams

  Cadetul Flynn
• 
  Sarah Alexander

  Rina (4 episodes, 2000)
• 
  Cavan Clerkin

  Victor (2 episodes, 2000)
• 
  William Marsh

  Cowboy Boots  (3 episodes, 2000)
• 
  Paul Darrow

  C.D. (3 episodes, 2000)
• 
  Doon Mackichan

  Galdriel (2 episodes, 2000)
• 
  Mike Hayley

  Mysterious Man (unknown episodes)
• 
  Meera Syal

  Volunteer (1 episode, 2000)

• 
  Morwenna Banks

  Supersupervisor (unknown episodes)
• 
  Angus Barnett

  Fluids (2 episodes, 2000)
• 
  Martin Trenaman

  Barkeep (1 episode, 2000)
• 
  Jack Docherty

  Cadet Niven (4 episodes, 2000)
• 
  Gabrielle Blunt

  Mrs. Bailey (1 episode, 2000)
• 
  David Walliams

  Rats (1 episode, 2000)
• 
  Kulvinder Ghir

  Keith (1 episode, 2000)