I feel quite well qualified to answer this question.

In short, I don't think it did. I think it's the mindset, which has a high correlation with certain classes, that matter.

I was originally from a town in the Welsh valleys where a lot of people were working class or on benefits. I then moved to a solidly middle class town just outside London, my parents did extremely well for themselves with their own business (they became consultants) and I went to a pretty posh and international school in London. Even though I have quite a strong Welsh accent, that has been somewhat tempered by a Southern Standard RP English accent I've never ever felt out of place. My freinds ranged from the poor on scholarships, to children of the international super rich to people from posh backgrounds (their parents being part of an aristocratic lineup) - none of us ever felt left out or discriminated against.

I also lived in the US for a short stint & now Australia. People are more or less the same wherever you go - the key difference being education. What the working class doesn't quite realise (because their parents were working class, their freinds are WC etc) is that if you study hard and apply yourself then you can overcome perceived barriers. Honestly, I can promise you, if you apply yourself you can make it. Your path to success won't be linear, or as easy as a more advantaged person. But there is nothing materially or genetically different.

If anything, I find that it's just the purely middle class people that are the most caught up in pretensions and class warfare. They prefer to look down on the poor/working class in an attempt to affirm their higher position, but themselves feel inferior to the wealthier/posher people despite there being virtually no difference. I even worked in a customer service position during uni, and I've always found middle class people to be the most uptight and rude.