On screen
Cast
32 credited performers
Kieron Moore
Cmdr. Michael Haydon
Lois Maxwell
Kim Hamilton
Donald Wolfit
Prof. Merrity
Bryan Forbes
Jimmy Wheeler
Jimmy Hanley
Larry Noble
Barry Keegan
Lefty
Walter Hudd
Professor Blandford
Donald Gray
Captain Ross
Thea Gregory
Barbara Noble
Artwork unavailable
Shirley Lawrence
Ellen
Artwork unavailable
Peter Neil
Tony
Artwork unavailable
Ryck Rydon
Reporter
Ronan O'Casey
Reporter
Robert O'Neil
Reporter
Alan Gifford
Colonel Galloway
Artwork unavailable
Charles Richardson
General Barnett
Carl Jaffe
Professor Bechstein
Artwork unavailable
Leonard Sharp
Thomas the Watchman (uncredited)
Artwork unavailable
Paul Beradi
Reporter (uncredited)
Artwork unavailable
Patrick Halpin
Reporter (uncredited)
Artwork unavailable
Terry Randall
Reporter (uncredited)
Bill Nagy
Reporter (uncredited)
Artwork unavailable
Terry Randall
Reporter (uncredited)
Artwork unavailable
John Wilder
Reporter (uncredited)
Artwork unavailable
Johnny Wyne
Reporter (uncredited)
Trevor Reid
Simmons the Technician (uncredited)
Bernard Bresslaw
Technician (uncredited)
Alastair Hunter
Technician (uncredited)
Artwork unavailable
Jane Dore
Young Girl (uncredited)
Artwork unavailable
Frank Sieman
Gatekeeper (uncredited)
Artwork unavailable
John Baker
Official (uncredited)
Tony Quinn
Jack the Barman