i totally agree, its something we experience everywhere. if anything, i find that oxbridge is more diverse than some unis, where my friends seem to have only met local people attending that uni, and not many from down south or scotland etc. i'm glad of this diversity, after living in a little northern bubble for years its such a breath of fresh air. and likewise it must be similar for some others, who don't know where newcastle is in relation to liverpool because they've never been anywhere north of the M4