Seymour Hicks
Professor Heggie
Acting
Nancy O'Neil
Angela Heggie
Acting
Gibson Gowland
Angus
Acting
Frederick Peisley
Jimmy Andrews
Acting
Eric Hales
Jack Campbell
Acting
Ben Field
Piermaster
Acting
Hubert Harben
Prof. Blenkinsop Fothergill
Acting
Rosamund John
Maggie Fraser
Acting
Robb Wilton
Reporter
Acting
Fewlass Llewellyn
Scientist at Meeting
Acting
Stafford Hilliard
Macdonald (Uncredited)
Acting
Cyril McLaglen
Mate (Uncredited)
Acting
Clive Morton
Reporter (Uncredited)
Acting