Cast 33

1. 

   Brian Donlevy

   Bernard Quatermass

2. 

   Jack Warner

   Inspector Lomax

3. 

   Richard Wordsworth

   Victor Carroon

4. 

   Margia Dean

   Judith Carroon

5. 

   Thora Hird

   Rosie Wrigley

6. 

   Gordon Jackson

   BBC TV producer

7. 

   David King-Wood

   Gordon Briscoe

8. 

   Harold Lang

   Christie

9. 

   Lionel Jeffries

   Blake

10. 

    Sam Kydd

    Police Sergeant Questioning Rosie

11. 

    Maurice Kaufmann

    Marsh (uncredited)

12. John Wynn

    Detective Sergeant Best (uncredited)

13. 

    Jane Asher

    Little Girl (uncredited)

14. 

    Toke Townley

    The Chemist (uncredited)

15. Margaret Anderson

    Maggie (uncredited)

16. Eric Corrie

    Maggie's Boyfriend (uncredited)

17. Henry B. Longhurst

    George (uncredited)

18. Ernest Hare

    Crash Site Fire Chief (uncredited)

19. Michael Godfrey

    Crash Site Fireman (uncredited)

20. 

    Marianne Stone

    Central Clinic Nurse (uncredited)

21. 

    John Kerr

    Photo Lab Technician (uncredited)

22. Bartlett Mullins

    Zookeeper (uncredited)

23. Mayne Lynton

    Zoo Superintendent (uncredited)

24. Barry Lowe

    Nurse Tucker (uncredited)

25. Jane Aird

    Mrs. Lomax (uncredited)

26. Molly Glessing

    Mother at Zoo (uncredited)

27. Arthur Gross

    TV Show Floor Director (uncredited)

28. 

    Basil Dignam

    Sir Lionel Dean (uncredited)

29. 

    Donald Gray

    TV Program Announcer (uncredited)

30. Gron Davies

    Charles Greene (uncredited)

31. 

    Stanley Van Beers

    Ludwig Reichenheim (uncredited)

32. Arthur Lovegrove

    Sergeant Bromley (uncredited)

33. 

    James Drake

    Sound Engineer (uncredited)

Crew 17