Factual error: In the wartime scene where the debris cloud from V1 bomb climbs into the sky, an AEC Routemaster "London Double-Decker" bus is to be seen in the background. In reality, the AEC Routemaster was introduced to service in 1956. (00:46:40)
Factual error: Just as Ralph Fiennes is getting out of a car to run across the road you can see, just as he steps out, road markings that were not around in the mid forties and that weren't on the road in a shot just previous when you could see the road behind Fiennes in the car window. (01:09:05)