Full Credits
33 members

Brian Donlevy
Prof. Bernard Quatermass

Richard Wordsworth
Victor Carroon

David King-Wood
Dr. Gordon Briscoe

Jack Warner
Inspector Lomax

Margia Dean
Judith Carroon

Maurice Kaufmann
Marsh
John Wynn
Detective Sergeant Best

Harold Lang
Christie

Lionel Jeffries
Blake

Thora Hird
Rosie Wrigley

Sam Kydd
Police Sergeant Questioning Rosie

Jane Asher
Little Girl (uncredited)

Toke Townley
The Chemist (uncredited)

Gordon Jackson
BBC TV producer
Margaret Anderson
Maggie (uncredited)
Eric Corrie
Maggie's Boyfriend (uncredited)
Henry B. Longhurst
George, Maggie's father (uncredited)
Ernest Hare
Crash Site Fire Chief (uncredited)
Michael Godfrey
Crash Site Fireman (uncredited)

Marianne Stone
Central Clinic Nurse (uncredited)

John Kerr
Photo Lab Technician (uncredited)
Bartlett Mullins
Zookeeper (uncredited)
Mayne Lynton
Zoo Superintendent (uncredited)
Barry Lowe
Nurse Tucker (uncredited)
Jane Aird
Mrs. Lomax (uncredited)
Molly Glessing
Mother at Zoo (uncredited)
Arthur Gross
TV Show Floor Director (uncredited)

Basil Dignam
Sir Lionel Dean (uncredited)

Donald Gray
TV Program Announcer (uncredited)
Gron Davies
Charles Greene (uncredited)

Stanley Van Beers
Ludwig Reichenheim (uncredited)
Arthur Lovegrove
Sergeant Bromley (uncredited)

James Drake
Sound Engineer (uncredited)
17 members
Val Guest
Director
Bill Shore
Assistant Director
Richard H. Landau
Screenplay
Val Guest
Screenplay
Nigel Kneale
Teleplay
Anthony Hinds
Producer
T.S. Lyndon-Haynes
Production Manager
Walter J. Harvey
Director of Photography
James Bernard
Original Music Composer
John Hollingsworth
Music Director
H. C. Pearson
Sound Recordist
J. Elder Wills
Art Direction
Philip Leakey
Makeup Artist
Molly Arbuthnot
Wardrobe Supervisor
Monica Hustler
Hairstylist
James Needs
Editor
Les Bowie
Special Effects