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John Mills as Commandant Fraser |
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John Gregson as Lieutenant Alec Duffy |
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Donald Sinden as Lieutenant Tom Corbett |
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James Robertson Justice as Admiral Ryder |
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Michael Medwin as Smart |
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Theodore Bikel as German Officer |
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James Kenney as Abercrombie |
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William Russell as Ramsey |
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O.E. Hasse as Captain of the Tirpitz |
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Lee Patterson as Cox |
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Harry Towb as McCleery |
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Cyril Chamberlain as CPO Chubb |
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Tony Wager as George |
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Leslie Weston as Winley |
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Lyndon Brook as Diver Navigator, X2 |
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Thomas Heathcote as Hutchins |
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Anthony Newley as Engineer, X2 |
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John Horsley as Lt. Anderson |
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William Franklyn as No. 1, X2 |
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Guido Lorraine as Officer Interpreter |
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Raymond Francis as Officer on Towing Sub. (1) |
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Basil Appleby as Officer on Towing Sub. (2) |
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Walter Gotell as German Officer on Tirpitz |
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Victor Harrington as RAF Officer (uncredited) |
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Arthur Howell as German Navy Officer (uncredited) |
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Barry Keegan as Sailor on Towing Sub (uncredited) |
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Frank Lawton as Naval Officer in Briefing Room (uncredited) |
| Editing | Gerald Thomas | Editor |
| Camera | Ernest Steward | Director of Photography |
| Production | Earl St. John | Executive Producer |
| Writing | Robin Estridge | Screenplay |
| Directing | Ralph Thomas | Director |
| Production | William MacQuitty | Producer |
| Sound | Arthur Benjamin | Original Music Composer |
| Art | George Provis | Art Direction |
