Brian Donlevy
Prof. Bernard Quatermass
John Longden
Chief Inspector Lomax
William Franklyn
Dr. Tom Brand
Bryan Forbes
Marsh
Charles Lloyd Pack
Work Camp Manager Dawson
Tom Chatto
Vincent Broadhead, M.P.
John Van Eyssen
The Plant Tour Guide
Sidney James
Jimmy Hall
Percy Herbert
Paddy Gorman
Michael Ripper
Ernie the Bartender
John Rae
E. J. Macleod
Philipp Baird
Lab Assistant
Betty Impey
Kelly
Joyce Adams
Woman Member of Parliament
