Norman Wisdom

Ordinary Seaman Norman Puckle

Ian Hunter

Admiral Sir Bryanston Blyth

David Lodge

Chief Petty Officer Knowles

Robert Urquhart

Commander Clayton

Edward Chapman

Mr. Philpots

Eddie Byrne

Petty Officer Filkins

Peter Jones

Diving Instructor

John Le Mesurier

Prosecuting Counsel

Terence Alexander

Defending Counsel

Sydney Tafler

Speedboat Owner

Brian Oulton

Bert Ainsworth

Harold Goodwin

Streaky Hopkinson

Johnny Briggs

Johnny Nolan

Frank Williams

Mr. Carruthers

Joe Robinson

Tall Sailor

Liz Fraser

NAAFI Girl

Penny Morrell

Miss Marlene Barlow

Claire Gordon

Blonde on Yacht

Julie Shearing

WRN Smith

Bosun

Bosun the Dog

John Arnatt

Briggs (uncredited)

John Bailey

Prisoner Escort (uncredited)

Alan Beaton

Commander (uncredited)

Michael Caine

Sailor in Cinema Fight (uncredited)

Rodney Cardiff

Sailor (uncredited)

Tony Castleton

Sailor (uncredited)

Cyril Chamberlain

Jimmy (uncredited)

Bill Cummings

Sailor (uncredited)

Roland Curram

Control Room Radio Operator (uncredited)

Larry Dann

New Dalton's Boy (uncredited)

Robert Desmond

Sailor on Bridge of Warship (uncredited)

Chick Fowles

Man in Cinema Queue (uncredited)

Tex Fuller

Sailor (uncredited)

Sheila Hancock

Doris (uncredited)

Imogen Hassall

Girl in Cinema Queue (uncredited)

Glyn Houston

Gym Instructor (uncredited)

Roy Lansford

Prisoner Escort (uncredited)

Rosamund Lesley

Peggy (uncredited)

Philip Locke

Teddy Boy in Cinema Fight (uncredited)

Keith Peacock

Sailor (uncredited)

Geremy Phillips

Audience Member (uncredited)

Bryan Pringle

Physical Training Instructor (uncredited)

Fred Real

Commander (uncredited)

Oliver Reed

Teddy Boy in Cinema Fight (uncredited)

William Roache

Space Centre Operator (uncredited)

Leonard Sachs

Yachtsman (uncredited)

Anthony Sagar

Instructor's Assistant (uncredited)

Arnold Schulkes

Sailor (uncredited)

Anne Scott

Polynesian Girl (uncredited)

John Tatham

Naval Officer (uncredited)