Prof. Bernard Quatermass

Brian Donlevy

Acting

Victor Carroon

Richard Wordsworth

Acting

Dr. Gordon Briscoe

David King-Wood

Acting

Inspector Lomax

Jack Warner

Acting

Judith Carroon

Margia Dean

Acting

Marsh

Maurice Kaufmann

Acting

Detective Sergeant Best

John Wynn

Acting

Christie

Harold Lang

Acting

Blake

Lionel Jeffries

Acting

Rosie Wrigley

Thora Hird

Acting

Police Sergeant Questioning Rosie

Sam Kydd

Acting

BBC TV producer

Gordon Jackson

Acting

Little Girl (uncredited)

Jane Asher

Acting

The Chemist (uncredited)

Toke Townley

Acting

Maggie (uncredited)

Margaret Anderson

Acting

Maggie's Boyfriend (uncredited)

Eric Corrie

Acting

George, Maggie's father (uncredited)

Henry B. Longhurst

Acting

Crash Site Fire Chief (uncredited)

Ernest Hare

Acting

Crash Site Fireman (uncredited)

Michael Godfrey

Acting

Central Clinic Nurse (uncredited)

Marianne Stone

Acting

Photo Lab Technician (uncredited)

John Kerr

Acting

Zookeeper (uncredited)

Bartlett Mullins

Acting

Zoo Superintendent (uncredited)

Mayne Lynton

Acting

Nurse Tucker (uncredited)

Barry Lowe

Acting

Mrs. Lomax (uncredited)

Jane Aird

Acting

Mother at Zoo (uncredited)

Molly Glessing

Acting

TV Show Floor Director (uncredited)

Arthur Gross

Acting

Sir Lionel Dean (uncredited)

Basil Dignam

Acting

TV Program Announcer (uncredited)

Donald Gray

Acting

Charles Greene (uncredited)

Gron Davies

Acting

Ludwig Reichenheim (uncredited)

Stanley Van Beers

Acting

Sergeant Bromley (uncredited)

Arthur Lovegrove

Acting

Sound Engineer (uncredited)

James Drake

Acting