It might still happen for a variety of reasons. I live in London, and not all boroughs/districts are equal. Compare posh Kensington on the western edge of the L

It might still happen for a variety of reasons. I live in London, and not all boroughs/districts are equal. Compare posh Kensington on the western edge of the London Underground Zone 1 with Whitechapel and Hackney at the eastern edge and you'll see a massive difference. Interestingly both areas are seeing a huge increase in ethnic diversity, but in Kensington it's the ultra-wealthy.