Derek Farr

as Insp. Davis

as Kenneth Palmer

as Dr. Erasmus Potter-Shine

as Mark Roper

as Group Captain J. N. H. Whitworth, D.S.O., D.F.C.

as Bruce Banning

as Jim Medway

as Sgt. Peter Burden

as Maxwell Oliver

as Captain Jumbo Hoyle

as Robert Graham

as Jack Williams