Dennis O'KeefePaul Mitchell Hugh WilliamsSir Richard Aldingham Stanley Van BeersCartwright Ellen PollockMiss Fossett Arnold BellPolice Inspector Clifford BucktonLodging House Keeper Leslie PhillipsBoy Student Marianne NoelleGirl Student Harold Sandersonuncredited Johnnie Schofielduncredited Hyma BeckleyArt Gallery Visitor (uncredited) Jimmy CainsHoward - Tate Gallery Attendant (uncredited) Dan DarnelliPub Customer (uncredited) Norman FisherMuseum Visitor (uncredited) Robert GregoryArt Gallery Visitor (uncredited) Charles HammondPub Customer (uncredited) Dido PlumbMuseum Visitor (uncredited) Jim TysonStevedore (uncredited) Ambrose GraysonAssociate Producer Denis WrefordArt Direction Cedric WilliamsDirector Of Photography U. P. HutchinsonMakeup Artist Leon BijouAssistant Director Ilona KabosOriginal Music Composer Robert FaloonProduction Accountant Theo LageardProduction Manager 
