• 
  Peter Bowles

  Stockbroker (1 episode, 1969)
• 
  Joss Ackland

  Derek Hartford (1 episode, 1969)
• 
  Jeremy Child

  Jeremy Forman (3 episodes, 1969)
• 
  George Innes

  Dillo (2 episodes, 1969)
• 
  George Cole (I)

  Barry Porter (1 episode, 1969)
• 
  Ann Lynn

  Rosemary Lamb (1 episode, 1969)
• 
  Noel Willman

  Opel (1 episode, 1969)
• 
  Ian Hendry (I)

  Tom Goodwin (1 episode, 1969)

• 
  Peter Madden

  Forbes Lingwood  (2 episodes, 1969)
• 
  Sally Thomsett

  Sally Hartford (1 episode, 1969)
• 
  Harold Goodwin

  Fishy (1 episode, 1969)
• 
  Geoffrey Russell

  Butler (1 episode, 1969)
• 
  Roy Dotrice

  Freddy Lamb (1 episode, 1969)
• 
  Terry Duggan

  Bailey (1 episode, 1969)
• 
  John Bindon

  Terry Lardner (2 episodes, 1969)

• 
  Geoffrey Whitehead

  Peter Conroy (1 episode, 1969)
• 
  Terence Rigby

  Nelson (1 episode, 1969)
• 
  Peter Cellier

  Mr. Slade (1 episode, 1969)
• 
  Robert Cawdron

  Stan (1 episode, 1969)
• 
  Jeremy Childs

  Jeremy Forman (3 episodes, 1969)
• 
  Peter Copley

  Asst. Commissioner Farr (3 episodes, 1969)
• 
  Peter Vaughan

  DCS Cradock (13 episodes, 1969)
• 
  Gabrielle Blunt

  Mrs. Turner (1 episode, 1969)
• 
  Christopher Benjamin

  Edward Makin (1 episode, 1969)
• 
  Alfred Lynch

  Josef Tyzack (1 episode, 1969)
• 
  Bernard Hepton

  Harold Oscroft (1 episode, 1969)
• 
  Marc Boyle

  Motorcyclist (1 episode, 1969)
• 
  Ronald Clarke

  Nobby Clarke (2 episodes, 1969)