George Sanders

Gordon Zellaby

Barbara Shelley

Anthea Zellaby

Martin Stephens

David Zellaby

Michael Gwynn

Alan Bernard

Laurence Naismith

Dr. Willers

Richard Warner

Harrington

Jenny Laird

Mrs. Harrington

Sarah Long

Evelyn Harrington

Thomas Heathcote

James Pawle

Charlotte Mitchell

Janet Pawle

Pamela Buck

Milly Hughes

Rosamund Greenwood

Miss Ogle

Susan Richards

Mrs. Plumpton

Bernard Archard

Vicar

Peter Vaughan

P.C. Gobby

John Phillips

General Leighton

Richard Vernon

Edgar Hargraves

John Stuart

Professor Smith

Keith Pyott

Dr. Carlisle

Alexander Archdale

Coroner

Sheila Robins

Nurse

Tom Bowman

Pilot

Anthony Harrison

Lieutenant

Diane Aubrey

WRAC Secretary

Gerald Paris

Sapper

June Cowell

Child

Linda Bateson

Child

John Kelly

Child

Carla Cura

Child

Lesley Scoble

Child

Mark Mileham

Child

Roger Malik

Child

Elizabeth Munden

Child

Teri Scoble

Child

Peter Preidel

Child

Peter Taylor

Child

Howard Knight

Child

Brian Smith

Village Child

Janice Howley

Village Child

Paul Norman

Village Child

Robert Marks

Village Child

John Bush

Village Child

Billy Lawrence

Village Child

Denis Gilmore

Keith older brother (uncredited)

John Wyndham

Novel

Ron Goodwin

Original Music Composer

Gordon Hales

Editor

Stirling Silliphant

Screenplay

Ronald Kinnoch

Screenplay

Wolf Rilla

Director

Ronald Kinnoch

Producer

Geoffrey Faithfull

Director of Photography

Wolf Rilla

Screenplay

Ivan King

Art Direction

Joan Johnstone

Hairstylist

Denis Johnson

Production Manager

Tom Howard

Visual Effects

Eric Aylott

Makeup Artist

Michael Stevenson

Third Assistant Director