as Stephen Kedge
as Mr. Dubbin
as Nyder
as Major General Oster
as Professor Whittaker
as Doctor
as Mr. Reise
as Dr. Lawrence
as Nyder (archive recording)
as BBC Executive
as Professor Whitaker
as Dr. Whatmore
as Arranches
as Arthur Wainright
as Secretary Rontane
as Bradshaw
as Registrar
as Harry Gold
