Sam Troughton

as Clive / Cathy

as Andrei Stepanov (2 episodes)

as Will O'Neill (6 episodes)

as Murray Guthrie (5 episodes)

as Stephen Yarrick (6 episodes)

as Donal McCabe (3 episodes)

as Robespierre

as The Stone (voice)

as DI Brian Tarpey (3 episodes)

as Dr. Henry Samson (8 episodes)

as Thomas Massey (4 episodes)

as Wilder (4 episodes)

as Ed Jarman (3 episodes)

as John Houseman

as Alexandr Akimov (5 episodes)

as Mr Hobhouse

as Captain Meadows (2 episodes)

as The Stone (1 episode)

as Charlie Morgan

as Dom

as Edmund

as Prince of Wales (2 episodes)

as Jeff (3 episodes)

as George (2 episodes)

as Malcom Simmons (1 episode)