• I have just watched the film again because it brings back memories for me. I lived in Wolverhampton then only a mile or two from the airfield and I recognise where much of it was filmed. I frequently saw the plane flying around, sometimes with smoke trailing as it passed over the playing field of my school. Watching it again after all this time, I was surprised not only by how well it stood up, but also how much of it was clearly shot on location, including the air control tower. The other notable feature for me is the quality of the cast: just about everyone in it had significant acting careers, Donald Pleasance, Lionel Jeffries etc. It's also fascinating to hear such details as rent prices (£200 for a year's rent, I think was mentioned) and to see how deserted the roads were then.