Noel MadisonNoel Madison was 40 in The Man Who Made Diamonds as 'Joseph'.
James StephensonJames Stephenson was 48 in The Man Who Made Diamonds as 'Ben'.
Lesley BrookLesley Brook was 20 in The Man Who Made Diamonds as 'Helen Calthrop'.
Wilfrid LawsonWilfrid Lawson was 37 in The Man Who Made Diamonds as 'Gallanie'.George GalleonGeorge Galleon was 24 in The Man Who Made Diamonds as 'Tony'.
Renee GaddRenee Gadd was 29 in The Man Who Made Diamonds as 'Marianne'.
Philip RayPhilip Ray was 39 in The Man Who Made Diamonds as 'Tompkins'.Hector AbbasHector Abbas was 53 in The Man Who Made Diamonds as 'Nichols'.
Wally PatchWally Patch was 49 in The Man Who Made Diamonds as 'Alf Higgins'.
J. Fisher WhiteJ. Fisher White was 72 in The Man Who Made Diamonds as 'Prof. Calthrop'.
Dino GalvaniDino Galvani was 47 in The Man Who Made Diamonds 
Ralph InceRalph Ince would have been no older than 50 in The Man Who Made Diamonds as 'Director'
Basil EmmottBasil Emmott was 43 in The Man Who Made Diamonds as 'Director of Photography'Irving AsherIrving Asher was 34 in The Man Who Made Diamonds as 'Executive Producer'Michael BarringerMichael Barringer was >> in The Man Who Made Diamonds as 'Script'
Frank RichardsonFrank Richardson was >> in The Man Who Made Diamonds as 'Screenstory'Anthony HankeyAnthony Hankey was >> in The Man Who Made Diamonds as 'Script'