This really is offensive. You're effectively implying that people who live in Chorlton do so because they are racists who don't want to live in the same area as non-whites. What a load of complete and total moronic wank.
As I said, I grew up on a council estate in a major British city which was almost completely white. People weren't 'paying a premium' to avoid black people, it was simply that there were very few black people there. The non-white population of Britain is less than 10%, this is what most of Britain looks like. The vast majority of immigrants have historically headed for the inner cities because that is where the work is, where the housing is cheapest and where they can live alongside people from their own background. It is nothing to do with people in Chorlton or elsewhere deliberately trying to avoid them.
You'd probably say the people in the place I grew up were 'hideously white'. The people in the place I live now aren't, I live alongside ethnic Somalis, Jamaicans, Poles, Bulgarians etc etc etc I don't have a self congratulatory wank to myself over living somewhere multicultural because that would make me a complete tit. I don't look down my nose at people just because they happen to live somewhere whiter than your own multiracial paradise. It's snobbery, it's judgmental crap and it's the sort of attitude that turns people off progressive politics because it excludes the vast majorities of towns and city suburbs in the country.
Wake up to yourself ffs