Jack Gwillim

as Poseidon

as General Byron

as Chief Justice

as British ambassador

as Sir Giles Dalrymple

as Aeëtes

as District Commissioner

as Captain Grant

as Inspector Cobb

as Archbishop Hubert Walter

as Supt. Andrews

as Captain Wilfrid Patterson - 'King George V'

as Josiah

as Brigadier Ames

as Commandant, Grizedale

as Captain Parry - H.M.N. Z. S. Achilles

as Representative of Parliament (uncredited)