When we lived in Aylesbury the (technically) catchment school for boy #1 had 21 different first languages. The school he went to was completely 'white'. Here in Hereford there are lots of Polish people, people from Portugal (there must be, there is a Portuguese cafe) and very, very few not white people. There are probably more transvestites here than foreign people (apparently Hereford is a transvestite hot spot).
However, I digress, still not sure what the actual issue is.