Michael Troughton

as Professor Albert

as Mr. Truscott (4 episodes)

as Mr. Mermagen

as Padre (6 episodes)

as Leonard Corbyn (1 episode)

as Bill Lester

as Bill Lester (2 episodes)

as Dirk French (10 episodes)

as Duke of Leeds

as Harry Sholton (1 episode)

as Colin Molen (1 episode)

as George (1 episode)

as Maquess of Tipperary (1 episode)

as Mr Barstow (1 episode)

as Phil Benson (4 episodes)

as Piers Fletcher-Dervish

as Mr. Walters (4 episodes)

as Piers Fletcher-Dervish (23 episodes)

as Bursely

as PC Ormonde (4 episodes)

as Curtis

as Chris Thomas (1 episode)