Personally, I don't mind the convention of British accents, regardless of country, in any period European movie, even if I'm always aware of it.
It's just another movie convention we all are asked to regularly accept, like:
Any time there's a night scene on a city street, the street is wet, whether it's raining or not.
Any time someone comes home with groceries, there's a loaf of French bread sticking out to let us know it's groceries.
If you are wounded in one scene, you will not have scars or bruises in the next, even if it's one day later. Even if it's a few hours later.
You can fall from a 50-foot height and recover without harm. You can be stabbed or shot and recover moments later without harm, and often without any serious bloodshed.
People can't sing in movies because that's unrealistic to most, yet they have no trouble accepting an 80-piece orchestra accompanying a war in outer space, or an intimate love scene, or just a walk in the park.
Women go to bed in full makeup with their hair styled.
There are always parking spaces available in front of the building you're going into.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22