• 
  John Acheson

  Ralph Crosbie
• 
  Geoffrey Chater

  Sir Harold Malyon
• 
  Ros Drinkwater

  Steve Temple
• 
  Peter Halliday

  Det. Sgt. Waterhill
• 
  Barry Jackson

  Stephen Lamb
• 
  Jack Le White

  Porter
• 
  Linda Liles

  Carol Lamb
• 
  Francis Matthews

  Paul Temple

• 
  Gerald Sim

  Stanley Allen
• 
  Robert Urquhart

  Arthur Swann
• 
  John Muirhead

  Mundy
• 
  Dennis Plenty

  Barman (as Denis Plenty)
• 
  George Noon

  Freddie Prince
• 
  Harold Reine

  Donaldson
• 
  Ian Elliot

  Restaurant Car Attendant