Dominic Mafham

as Silas (1 episode)

as MI6 Chief Arnold

as George Cartwright (5 episodes)

as Judge Karl Engert

as James Wyckham (2 episodes)

as Haim Bar-Lev

as Jeremy (2 episodes)

as Iain Frankland (1 episode)

as Sir Ian Downing (2 episodes)

as Michael Stone (1 episode)

as Martin

as Mr. Thackery / Alfie Frampton (1 episode)

as Dr. Malcolm Betruger

as Polonius

as Ralph Kuntz

as Charles Kruger (1 episode)

as Himself - Narrator

as Self - Narrator (3 episodes)

as Jerry Waldegrave (2 episodes)

as Antonio

as Bidwell

as Chief Superintendent Shaw (3 episodes)

as Sir Horsa

as Bidwell