Derek Bond
— Saturday Keith
Rona Anderson
— Joanna Benbow
James Robertson Justice
— Prof. Benbow
John McLaren
— Elmer Van Buren
Barbara Murray
— Nelly Bly
Peter Croft
— Quentin Cotton
Leslie Dwyer
— Holly
Joyce Grenfell
— Miss Horsefell-Hughes
Fabia Drake
— Lady Mercy Cotton
Maurice Denham
— PC Windle
Kay Cavendish
— Jean Forbes
Andrew Osborn
— Williams
Iris Hoey
— Lady Keith