Cast 20

1. 

   Laurence Harvey

   Dr. Francis Trevelyan

2. 

   Daliah Lavi

   Princess Natasha Romanova

3. 

   Lionel Jeffries

   Stanley Farquhar

4. 

   Eric Sykes

   Wrigley

5. 

   Eric Portman

   British Ambassador

6. 

   Denholm Elliott

   Pond-Jones

7. 

   Wanda Ventham

   Mrs. Winters

8. 

   Marianne Stone

   Mrs. Whitby

9. 

   June Whitfield

   Elsie Farquhar

10. 

    Colin Blakely

    Russian Prime Minister

11. 

    Robert Flemyng

    M.I.5 Director

12. 

    Bernard Archard

    Russian Intelligence Chief

13. 

    Paul Ford

    American General

14. 

    Michael Trubshawe

    Braithwaite

15. 

    Amy Dalby

    Miss Marchbanks

16. John Forbes-Robertson

    M.I.5 Workshop Director

17. R.S.M. Brittain

    Commissionaire

18. Peter Bayliss

    Professor

19. 

    Barry Cryer

    Harold Wilson (voice)

20. 

    Renée Houston

    Lady Blanchflower

Crew 12