• 
  Lynn Redgrave

  Berta Garlan (1 episode, 1974)
• 
  Dorothy Tutin

  Beate Heinold (1 episode, 1973)
• 
  Christopher Guard

  Hugo Heinold (1 episode, 1973)
• 
  Lyndon Brook

  Herr Rupuis (1 episode, 1974)
• 
  Susan Littler

  Katharina Rebner (2 episodes, 1973)
• 
  Una Brandon-Jones

  Postmistress (1 episode, 1973)
• 
  Robin Bailey

  The Baron (1 episode, 1973)
• 
  Robert Stephens

  Dr. Graesler (6 episodes, 1973-1974)

• 
  Sydney Tafler

  Herr Klingemann (1 episode, 1974)
• 
  John Bennett

  Dr. Böhlinger (2 episodes, 1973)
• 
  Christopher Gable

  Karl Schleheim (3 episodes, 1973-1974)
• 
  Peter Copley

  Herr Schleheim (1 episode, 1973)
• 
  Jeremy Clyde

  Lt. Franzl von Schall (1 episode, 1973)
• 
  Sandor Elès

  Emil Lindbach (1 episode, 1974)
• 
  Adrienne Corri

  Baroness Fortunata (1 episode, 1973)

• 
  Bernard Lee

  Herr Welponer (1 episode, 1973)
• 
  Rebecca Saire

  Frau Sommer's daughter (2 episodes, 1973-1974)
• 
  Christopher Benjamin

  Herr Arbesbacher (1 episode, 1973)
• 
  Neville Phillips

  Waiter (6 episodes, 1973-1974)