David Swift

as Harold McEwan

as Euphrates (1 episode)

as Oscar Spinner (13 episodes)

as Michael

as Self

as Henry Davenport

as Henry Davenport (65 episodes)

as Max Wartbug (20 episodes)

as Beddow

as Daladier

as Henry Reedburn (1 episode)

as Bill

as Mr Sedley (11 episodes)

as John Cross (4 episodes)

as J.C. Roebuck

as Crosby Nuttall (1 episode)

as Mr King

as Det. Supt. David Gosling

as Joe Morris

as Lionel

as Joseph Breuer (6 episodes)

as Sir William Logie (3 episodes)

as Sir Marcus Cohen (1 episode)

as Richard Rees

as Bill (3 episodes)