This is an absolute classic of wartime comedy. Will Hay, Charles Hawtery and Peter Ustinov all on great form. I would, under normal circumstances, give this film 5 out of 5 but I have just purchased a copy and found that two of the funniest scenes in the film have been cut from this print. The two scenes are the pronunciation of British towns (Slough, Cirencester etc) and the 'Invasion of Britain' scene on the train (Panzers down in the Severn Tunnel etc.). So my advice would be definitely see this film but save your money and wait for it to be shown on television.