• 
  John Schlesinger

  Prisoner on Graf Spee
• 
  Christopher Lee

  Manolo
• 
  Irene Prador
• 
  Richard Ng

  Prisoner on Graf Spee
• 
  Patrick Jordan

  Signalman, Aft-conning, HMS Exeter
• 
  Peter Dyneley

  Captain, Newton Beach, prisoner on Graf Spee
• 
  Nigel Stock

  Chief Officer, Tairoa, prisoner on Graf Spee
• 
  David Farrar

  Narator

• 
  William Squire

  Ray Martin
• 
  Peter Illing

  Dr. Guani - Foreign Minister, Uruguay
• 
  Michael Goodliffe

  Captain McCall - R.N., British Naval Attache for Buenos Aires
• 
  Lionel Murton

  Mike Fowler
• 
  Ambrosine Phillpotts

  Mrs. Millington-Drake, Montevideo
• 
  Peter Finch

  Captain Langsdorff 'Admiral Graff Spee'
• 
  Anthony Bushell

  Mr. Millington Drake - British Minister, Montevideo

• 
  Douglas Wilmer

  M. Desmoulins - French Minister, Montevideo
• 
  Brian Worth

  Radio Operator, Doric Star, prisoner on Graf Spee
• 
  James Copeland

  Chief Yeoman - HMS Achilles
• 
  John Chandos

  Dr. Langmann - German Minister, Montevideo
• 
  John Gregson

  Captain Bell - H.M.S. Exeter
• 
  Richard Beale

  Captain Pottinger
• 
  John Le Mesurier

  Rev. George Groves, Padre, HMS Exeter
• 
  David Paltenghi

  Customs Officer, Montevideo
• 
  Anthony Wager

  Look Out, HMS Ajax
• 
  Cyril Luckham

  Lt. Jasper Abbot - HMS Achilles
• 
  Conrad Phillips

  Lt. Washbourne, Gunnery Officer, HMS Achilles
• 
  Roger Delgado

  Captain Varela - Uruguayan Navy
• 
  Anthony Newley

  Radio Operator, Tairoa, prisoner on Graf Spee
• 
  Patrick Westwood

  Archer, HMS Ajax
• 
  Anthony Quayle

  Commodore Harwood - H.M.S. Ajax
• 
  Jack Gwillim

  Captain Parry - H.M.S. Achilles
• 
  Ian Hunter

  Captain Woodhouse - H.M.S. Ajax
• 
  Bernard Lee

  Captain Dove - M.S. Africa Shell
• 
  Terence Bayler

  Stoker - HMS Achilles
• 
  Barry Foster

  Bill Roper, Capt. Bell's messenger, HMS Exeter
• 
  Patrick Macnee

  Lieutenant Commander Medley - R.N.
• 
  Ronald Clarke

  Prisoner on Graf Spee