My understanding is that a city boundary in the US is a big deal. The police force on either side can be completely different, things that can get you in a lot of trouble like gun laws can be different on either side, prices and taxes can be very different. In the UK a city boundary doesn't really mean anything. There might be a nice 'Welcome to X' sign but nothing really changes as it would in the US. I'm not even s…
And there's no history of segregation.