Paul Rogers
(Mr. Verloc)
Frances White
(Winnie Verloc)
Robert Hardy
(The Assistant Commissioner)
Anton Rodgers
(Mr. Vladimir)
Joyce Carey
(Lady Dorothy)
Peter Sallis
(Chief Inspector Heat)
Michael Gambon
(Tom Ossipon)
John Cater
(The Professor)
Vernon Dobtcheff
(Karl Yundt)
Bruce Purchase
(Mr. Michaelis)
Vivienne Burgess
(Winnie's Mother)
Peter Clough
(Stevie)
Ann Queensberry
(Guest)
Andree Evans
(Guest)
Sara Van Beers
(Guest)