@Gargron if this can help here is my experience in the UK:
I live in Sheffield, cheaper than London, close to the Peak District and plenty of outdoor beautiful spaces and parks.
I moved here in 2018, so before Brexit, but I had to apply for settlement status and I easily got it.
Problems? Yes there are and after Brexit even more and a post here wouldn't be enough.
Kids are doing well, my wife got a permanent job in a primary school and more, despite the tories I won't go back to Italy.