• 
  Paul Dickson (I)

  regizor

• 
  Bryan Forbes

  Jimmy Wheeler
• 
  Lois Maxwell

  Kim Hamilton
• 
  Trevor Reid

  Technician
• 
  Kieron Moore

  Cmdr. Michael Haydon
• 
  Carl Jaffe

  Prof. Bechstein
• 
  Donald Wolfit

  Prof. Merrity
• 
  Ronan O'Casey

  Reporter

• 
  Donald Gray

  Capt. Ross
• 
  Alan Gifford

  Col. Galloway
• 
  John Clarke

  Jimmy Wheeler
• 
  Donald Gray

  Capt. Ross
• 
  Thea Gregory

  Barbara
• 
  Jimmy Hanley

  Larry
• 
  Walter Hudd

  Blandford

• 
  Barry Keegan

  Lefty
• 
  Shirley Lawrence

  Ellen
• 
  Peter Neil

  Tony
• 
  Robert O'Neil

  Reporter
• 
  Ryck Rydon

  Reporter (as Rick Rydon)

• 
  Georges Périnal

  imagine
• 
  James Wilson

  imagine