I agree that this isn't covered well in my article about moving to the UK from the USA. Giving advice on visas and that can be dangerous and the rules change. I came so long ago that things are different now and my advice would be worse than useless. I should probably write an article about how a friend of mine tried to move overseas for a job and it all went wrong even though he had a good plan. Poor bastard.
The only thing I disagreed with is the expat clique thing. Maybe in a country where English is not the main spoken language this does happen, but here in Scotland we avoid eachother like the plague and lie and say we're Canadian if anyone asks. 😆