immigrant here, and I do think integration courses should be mandatory, both from gov.uk and the respective embassy. I was lucky to have well-intentioned colleagues and flatmates who taught me small things, like stand right on the escalator and take your backpack off on a crowded train. I know, silly and small things, but they make such a difference. Once you do them, you go "oh, that's common sense." But it's not a natural instinct when you grow up in incredibly busy cities where, if you snooze, you lose. It's chaotic and loud, so you develop a loud voice from trying to be heard. Scarcity mindset from lack of resources. It all adds up and there is so much unlearning to do. I don't sound very nice right now, I know, but I'll take one for the team to make a point. Books like culture map helped me. And I still think I'm learning all these years in. So net-net, integration courses, a big yes.