Series Cast 32

1. John Paul

   Dr Spencer Quist (13 Episodes)

2. Joby Blanshard

   Colin Bradley (13 Episodes)

3. 

   Simon Oates

   Dr. John Ridge (13 Episodes)

4. Vivien Sherrard

   Barbara Mason (13 Episodes)

5. 

   Robert Powell

   Tobias Wren (13 Episodes)

6. 

   John Nolan

   Geoff Hardcastle (13 Episodes)

7. 

   Michael Elwyn

   Richard Duncan (2 Episodes)

8. 

   John Lee

   Captain - Second Airline Crew (1 Episode)

9. 

   Robert James

   Barker (1 Episode)

10. 

    Morris Perry

    Prof. Alec Hetherington (1 Episode)

11. 

    Bruce Purchase

    Norman Sylvester (1 Episode)

12. 

    Leslie Schofield

    Harry (1 Episode)

13. 

    Cec Linder

    Sen. Connell (1 Episode)

14. 

    Katherine Kath

    Lady Janette Holroyd (1 Episode)

15. 

    Jonathan Pryce

    Police Constable (1 Episode)

16. 

    Michael Keating

    Stephen Grigg (1 Episode)

17. 

    June Brown

    Kit Pedler (1 Episode)

18. 

    Margaret John

    Mrs. Joan Simpson (1 Episode)

19. 

    Geoffrey Palmer

    Major Sims (1 Episode)

20. Talfryn Thomas

    Mr. Hetherington (1 Episode)

21. 

    Nicholas Courtney

    Phillip (1 Episode)

22. 

    Brian Wilde

    Prof. Fairbairn (1 Episode)

23. 

    Frederick Jaeger

    Richard Massingham (1 Episode)

24. 

    Elisabeth Sladen

    Sarah Collins (1 Episode)

25. 

    Christopher Chittell

    Dick Burns (1 Episode)

26. Paul Seed

    Michael Pratt (1 Episode)

27. 

    Bernard Horsfall

    Steven Granger (1 Episode)

28. 

    Llewellyn Rees

    Rev. Charles Garrison (1 Episode)

29. 

    John Gregg

    Roger Halls (1 Episode)

30. 

    Moultrie Kelsall

    Alexander Drummond (1 Episode)

31. 

    Ronald Hines

    Ian Drummond (1 Episode)

32. 

    Viviane Ventura

    Paola Maria Totti (1 Episode)

Series Crew 17