H.M.S. Defiant

Alec Guinness

Captain Crawford

Dirk Bogarde

Lieut. Scott-Padget

Anthony Quayle

Vizard

Maurice Denham

Mr. Goss (Ship's Surgeon)

Nigel Stock

Senior Midshipman Kilpatrick

Tom Bell

Evans

Richard Carpenter

Lieut. Posonby

Peter Gill

Lieut. D'Arblay

Ray Brooks

Hayes

Robin Stewart

Pardoe

Murray Melvin

Wagstaffe

Victor Maddern

Dawlish

David Robinson

Harvey Crawford

Bryan Pringle

Sgt Kneebone

Johnny Briggs

Wheatley

Toke Townley

Silly Billy

Declan Mulholland

Morrison

Peter Greenspan

Johnson

Brian Phelan

Grimshaw

Walter Fitzgerald

Admiral Jackson

Joy Shelton

Mrs Crawford

Anthony Oliver

Tavern Leader

Russell Napier

Flag Captain

Michael Coles

Flag Lieutenant

André Maranne

Col. Giraud

Del Baker

Marine Captain (uncredited)

Joe Beckett

Crewman (uncredited)

James Bolam

Midshipman (uncredited)

Tom Bowman

Bosun (uncredited)

Jim Brady

Press Gang (uncredited)

Vic Chapman

Crewman (uncredited)

Maxwell Craig

Crewman (uncredited)

Dick Gregory

Purser (uncredited)

Patrick Halpin

Crewman (uncredited)

Walter Henry

Pressed Crewman (uncredited)

Ann Lynn

Young Wife of Pressed Crewman (uncredited)

Alf Mangan

Sailor (uncredited)

Endre Muller

French Captain (uncredited)

Roger Mutton

Sailor (uncredited)

Emilio Scala

Pirate (uncredited)

Arnold Schulkes

Crewman (uncredited)

James Sharkey

Venetian Captain (uncredited)

Vera Tilsley

Girl in Inn (uncredited)

Harry Webster

Flagship Sailor (uncredited)

Fred Wood

French Sailor (uncredited)