Which UK PM did not serve as Foreign Secretary?

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Tags

1. #harold
2. #chancellor
3. #achieving
4. #asquith
5. #prime
6. #winston
7. #foreign
8. #several
9. #major
10. #while
11. #secretary
12. #other
13. #distinction
14. #served
15. #people
16. #minister
17. #years
18. #churchill
19. #close
20. #macmillan
21. #hundred