This film serves a propaganda purpose (to put the best gloss on the retreat at Dunkirk and combat defeatism at a time when the war in Europe still hung in the balance), but it does not neglect story-making or crave our indulgence "because these are hard times." The story-telling is brisk, verging on breathless, and the film-making is of superior quality. The director makes deft use of newsreel footage of London under the Blitz, weaving it convincingly into his set pieces. But, as other reviews have suggested, perhaps the strongest aspect of the film is the way it captures human responses to a city under bombardment and the threat of invasion. The combination achieved of the comical, the blase and the poignant is just about right. Perhaps its "chin up" tone might seem a bit false to some viewers today, but I think most will find something genuine lies behind this entertainment. The story? Well, it should keep your attention. The cast all do good work, and the transfer looks OK for its age.