The Human Factor

When a leak of information in the African section of British Intelligence is discovered, a security man is brought in to investigate.

• 
  Nicol Williamson

  Maurice Castle
• 
  Richard Attenborough

  Colonel John Daintry
• 
  Derek Jacobi

  Arthur Davis
• 
  John Gielgud

  Brigadier Tomlinson
• 
  Iman

  Sarah
• 
  Joop Doderer

  Cornelius Muller
• 
  Robert Morley

  Doctor Percival
• 
  Ann Todd

  Castle's Mother
• 
  Keith Marsh

  Porter
• 
  Gary Forbes

  Sam