Forbidden (1949)

After the war, Jim Harding (Douglass Montgomery) is desperate to put his knowledge of chemistry to good use but his wife's greed forces him to sell potions for baldness and stomach disorders in a fairground booth on Blackpool's Golden Mile. His marriage hits rock bottom when his wife Diana (Patricia Burke) dates a theatrical impresario behind his back and Jim falls in love with the beautiful Jane Thompson (Hazel Court), who runs the candyfloss stall opposite.