Sorry I can only speak with the experience of one school (in England) but despite the curriculum constraints they work within
It’s definiyely changed now, but the history I was taught – in the “O” level era, when dinosaurs were Current Affairs – and especially wider historical information you could read away from the curriculum, was still very much Empire focused, and it’s this older generation who have those Union Flag blinkers on.
He did seem to be getting a grilling from Laura on BBC News last night. My lad reckons it was the toughest grilling he’s had from anyone since the pandemic began, including Starmer, which doesn’t say much.
Maybe her “source in No10” has asked her to twist the knife for him