Piccadilly Circus and the Statue of Eros in post-war London. Cars circle the roundabout, and pedestrians crowd the pavements. At the Criterion Theatre, Traveller's Joy, starring Yvonne Arnaud and Charles Victor, is playing. The scene is dominated by hoardings and illuminations advertising Votrix Vermouth, Jacob's Cream Crackers, Brylshave and Wrigley's Chewing Gum.