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