Frederick Treves

as Professor Mullins (1 episode)

as Sir Peregrine Prentiss

as Lord Cranthorne (1 episode)

as Governor (1 episode)

as Emperor

as Hubert St John Langton (3 episodes)

as Col. Forbes-Jones (1 episode)

as Sir Peregrine Prentiss

as Great Uncle James (1 episode)

as Lord Quillington (4 episodes)

as Brigadier Sanders (2 episodes)

as Drinkwater

as Scout Dawson (3 episodes)

as Gerard Sefton (1 episode)

as Eye Surgeon

as Lord Kellner (1 episode)

as Samuel Simpson

as Dr. Mumford

as Walter (1 episode)

as Worplesden (1 episode)

as Henry Parker (1 episode)

as Colonel (1 episode)

as Nicholas Tapscott (2 episodes)

as Sir Charles Portal