I'm actually quite surprised the statistics are that high too.
My children are mixed race and they are the ONLY non white people in our entire village. We have a few white South Africans and am American family but other than that I thinke verybody is white British. There are a few black, Asian and mixed race children in the school (I'm only talking around 25 children out of 450) but those are all either international boarders or children from our nearest city.
And I live less than an hour from London.
I know London is very multi cultural but I'm still surprised at the extent.
I don't think it's a good thing or a bad thing though. It just is.