On screen
Cast
36 credited performers
Robert Powell
Richard Hannay
David Warner
Sir Edmund Appleton
Eric Porter
Chief Superintendent Lomas
Karen Dotrice
Alex Mackenzie
John Mills
Scudder
George Baker
Sir Walter Bullivant
Ronald Pickup
Bayliss
Donald Pickering
Marshall
Timothy West
Porton
Miles Anderson
David
Andrew Keir
Lord Rohan
Robert Flemyng
Magistrate
William Squire
Harkness
Artwork unavailable
Paul McDowell
McLean
David Collings
Tillotson
John Normington
Fletcher
John Welsh
Lord Belthane
Edward de Souza
Woodville
Tony Steedman
Admiral
Artwork unavailable
John Grieve
PC Forbes
Andrew Downie
Stewart
Donald Bisset
Renfrew
Artwork unavailable
Derek Anders
Donald
Oliver Maguire
Martins
Joan Henley
Lady Nettleship
Prentis Hancock
Perryman
Artwork unavailable
Leo Dolan
Milkman
Artwork unavailable
James Garbutt
Miller
Artro Morris
The Scot
Robert Gillespie
Crombie
Raymond Young
Guide
Artwork unavailable
Paul Jerricho
PC Scott
Michael Bilton
Vicar
Guy Standeven
General (uncredited)
Jill Goldston
Nun (uncredited)
Artwork unavailable
James Payne
Onlooker (uncredited)