Capt. Edward V. Kinross

Noel Coward

Ordinary Seaman Shorty Blake

John Mills

Chief Petty Officer Hardy / Walter Hardy

Bernard Miles

Mrs. Kinross / Alix

Celia Johnson

Freda Lewis / Freda

Kay Walsh

Katherine Lemmon Hardy

Joyce Carey

Young Stoker

Richard Attenborough

No. One

Derek Elphinstone

'Flags', Second Lieutenant

Michael Wilding

Maureen Fenwick

Penelope Dudley Ward

Doc

James Donald

Torps

Philip Friend

Guns

Robert Sansom

Mrs. Blake

Kathleen Harrison

Midshipman

Chimmo Branson

Engineer Commander

Ballard Berkeley

Pilot

Hubert Gregg

Edgecombe

Frederick Piper

Joey Mackeridge

Geoffrey Hibbert

Mr. Blake

George Carney

Sub

Michael Whittaker

Sub-Lieutenant R.N.V.R.

Kenneth Carten

Uncle Fred

Wally Patch

Secco

John Varley

Colonel Lumsden

Walter Fitzgerald

Brodie

Caven Watson

Lavinia Kinross

Ann Stephens

Bobby Kinross

Daniel Massey

Reynolds

Lionel Grose

Parkinson

Leslie Dwyer

Fisher

Charles Russell

Capt. Jasper Fry

Gerald Case

Moran

John Singer

Coombe

Robert Moreton

Hollett

John Boxer

Posty

Kenneth Evans

Coxswain

Johnnie Schofield

Commander Spencer

Franklyn Bennett

№ 1. "Tremoyne"

Charles Compton

Mrs. Lemmon

Dora Gregory

Mr. Satterthwaite

Norman Pierce

May Blake

Jill Stephens

Mrs. Farrell

Eileen Peel

Mrs. Macadoo

Barbara Waring

Barmaid

Kay Young

Nurse

Everley Gregg

Frieda's Baby

Juliet Mills

"Flags"

Michael Wilding, Sr.

Nell Fosdick

Lesley Osmond

Dr. Drake

Brefni O'Rorke

Emily

Josie Welford

Mona Duke

Trixie Scales

Moran

Jonathan Singer

Albert Fosdick

Michael Anderson

Photographer

Roddy Hughes

Narrator (voice) (uncredited)

Leslie Howard