Simon Paisley Day

as Foreign Secretary (2 episodes)

as Harry Draperson QC (1 episode)

as General Reginald Dyer

as Ian Gow (2 episodes)

as Brian Baines

as Admiral Pound

as Jeff (1 episode)

as William Rossetti

as Brigadier Hollingsbrooke (1 episode)

as Officer Henri (1 episode)

as Mr. Grimsby

as Tim (2 episodes)

as Sir John Scarlett (1 episode)

as Dominic Cummings (6 episodes)

as Mr. Shepherd

as Alan Scott (1 episode)

as Rupert (1 episode)

as Dr. Baxter (2 episodes)

as Xarthisius (5 episodes)

as General Quinn

as Oliver Locker-Lampson

as Rienstra Van Stuyvesant

as Sir Montague Smythe

as King Trex (1 episode)

as Douglas Carswell