布莱恩·唐莱维

Brian Donlevy

饰：Prof. Bernard Quatermass

约翰·朗登

John Longden

饰：Lomax (as John Longdon)

希德·詹姆斯

Sid James

饰：Jimmy Hall (as Sydney James)

布莱恩·福布斯

Bryan Forbes

饰：Marsh

威廉·富兰克林

William Franklyn

饰：Brand

薇拉·黛

Vera Day

饰：Sheila

查尔斯·劳埃德·帕克

Charles Lloyd Pack

饰：Dawson

Tom Chatto

饰：Broadhead

约翰·范艾森

John Van Eyssen

饰：The P.R.O.

珀西·赫伯特

Percy Herbert

饰：Gorman

迈克尔·里佩尔

Michael Ripper

饰：Ernie

John Rae

饰：McLeod

玛丽安·斯通

Marianne Stone

饰：Secretary

罗纳德·威尔逊

Ronald Wilson

饰：Young Man

Jane Aird

Jane Aird

饰：Mrs. McLeod

Betty Impey

Betty Impey

饰：Kelly

劳埃德·兰布尔

Lloyd Lamble

饰：Inspector

约翰·斯图尔特

John Stuart

饰：Commissioner

Edwin Richfield

饰：Peterson

John Fabian

饰：Intern

乔治·梅里特

George Merritt

饰：Super

Arthur Blake

Arthur Blake

饰：Constable

迈克尔-鲍弗尔

Michael Balfou

饰：Harry

Leslie Crawford

Leslie Crawford

饰：Guard (uncredited)

Vernon Greeves

Vernon Greeves

饰：First Man (uncredited)

Jan Holden

饰：Young Girl (uncredited)

Alastair Hunter

Alastair Hunter

饰：Labour MP (uncredited)

Barry Lowe

饰：Chris (uncredited)

Joan Schofield

Joan Schofield

饰：Woman Shopper (uncredited)

Gilbert Davis

饰：Banker

Joyce Adams

Joyce Adams

饰：Woman MP

Howard Williams

饰：Michaels

Phillip Baird

Phillip Baird

饰：Lab. Assistant (as Philip Baird)

Robert Raikes

Robert Raikes

饰：Lab. Assistant

Henry Rayner

饰：Drunk (uncredited)