Kadro (17)
Kenneth MoreRichard Hannay
Taina ElgMiss Fisher
James HayterMr Memory
Barry JonesProfessor Arthur Logan
Barbara SteeleExtra
Brenda De BanzieNellie Lumsden
Faith BrookMandy Robinson ("Nannie")
Joan HicksonMiss Dobson
Sid JamesPerce Baker
Leslie DwyerMilkman
Jameson ClarkMacDougal
Carol WhiteSchoolgirl in Assembly Hall (uncredited)Betty HendersonMrs, MacDougal
Reginald BeckwithLumdsen
Marianne StoneHospital Administrator (uncredited)
Jill HaworthSchoolgirl on Train (uncredited)
Peter Vaughan2nd Police Constable on Train (uncredited)