Factual error: At the end of the 'Goodbye' the men all board a train which leaves along a track on a seaside pier. The shot changes from this stylised vision to a shot of an Edwardian Lady alone on a railway platform. In the background is a 1970s, ie. modern, diesel train.
Factual error: The door of the garage next to the house is of the aluminum up-and-over type, not available until the late 1960's.
Factual error: In the opening scene, a German buzz-bomb is shown falling on WWII London. In the background, a nuclear power plant can easily be seen. A double mistake of sorts, as there never have been any nuclear power plants near London, even after they were invented.