"A bomb dooms the first space satellite, manned by a selfless crew, a stowaway reporter (Lois Maxwell) and a mad scientist (Donald Wolfit)."
Kieron Moore
as Cmdr. Michael Haydon
Lois Maxwell
as Kim Hamilton
Donald Wolfit
as Prof. Merrity
Bryan Forbes
as Jimmy Wheeler
Jimmy Hanley
as Larry Noble
Barry Keegan
as Lefty
Walter Hudd
as Professor Blandford
Donald Gray
as Captain Ross
Thea Gregory
as Barbara Noble
Shirley Lawrence
as Ellen
Peter Neil
as Tony
Ryck Rydon
as Reporter
Ronan O'Casey
Robert O'Neil
Alan Gifford
as Colonel Galloway
Charles Richardson
as General Barnett
Carl Jaffe
as Professor Bechstein
Leonard Sharp
as Thomas the Watchman (uncredited)
Paul Beradi
as Reporter (uncredited)
Patrick Halpin
Terry Randall
Bill Nagy
John Wilder
Johnny Wyne
Trevor Reid
as Simmons the Technician (uncredited)
Bernard Bresslaw
as Technician (uncredited)
Alastair Hunter
Jane Dore
as Young Girl (uncredited)
Frank Sieman
as Gatekeeper (uncredited)
John Baker
as Official (uncredited)
Tony Quinn
as Jack the Barman
as Jack the Barman (uncredited)
John C. Mather
Screenplay
J.T. McIntosh
Edith Dell
Paul Dickson
Director
Harry Lee Danziger
Producer
Erik Blakemore
Art Direction
Edward J. Danziger
Nicholas Duke Biddle
Associate Producer
Sidney Stone
Editor
Albert Elms
Original Music Composer
James Wilson
Director of Photography
Georges Périnal