At the end of the film, Mr. Birling answers the telephone call by the police and is told that an inspector is on his way to visit regarding the suicide death of Miss Norwood (aka Eva Smith).
However, it would not be proper police procedure for them to give advance warning of such a visit. An inspector would instead come to the door unexpectedly (as did the "phantom" Inspector Poole) thereby preventing the Birlings from preparing a story in order to reduce or eliminate any culpability on their part.
To be forewarned is to be forearmed.
A more realistic ending would dispense with any such prior phone call warning and instead have a real inspector appear at the Burling's door.
However, it would not be proper police procedure for them to give advance warning of such a visit. An inspector would instead come to the door unexpectedly (as did the "phantom" Inspector Poole) thereby preventing the Birlings from preparing a story in order to reduce or eliminate any culpability on their part.
To be forewarned is to be forearmed.
A more realistic ending would dispense with any such prior phone call warning and instead have a real inspector appear at the Burling's door.
Despite the film/story being set in 1912 England, the ladies dresses feature zip fasteners, but the modern zipper was not invented for use in clothing until 1913.
At around 59mins, a poster for a circus appears in the background advertising the Great Blondin. The film is set in 1912, but Blondin died in Ealing in 1897.
Though the father of the family has a pronounced Northern accent, no one else in his family does. His wife might have grown up elsewhere, but there is no reason for his son and daughter to speak as if they had lived all their lives in London. They might have learned at their expensive private schools to speak without a Northern accent, but no reason can be given for Eva, the shopgirl who spent her first fifteen years in the Yorkshire countryside, to sound like an upper-class girl from the south of England.