I think I agree with you, Bags, as far as the present generation are concerned, but my parents were both avid readers, politically aware and intelligent, but having had to leave school at 14 they never got away from their working class background. On the other hand, my father's brother, with the same lack of education, took correspondence courses and got himself a white-collar job in the Probate Office, bought his own house, and had holidays in Benidorm in the 1950s. He was what we call 'aspirational working class', whereas my father seemed content to do his unskilled job until he died.
I have long thought that the working classes started to lose out when more of them went to grammar schools , got professional careers and embraced the middle class lifestyle. It seemed that everybody who could have been a spokesman for the disadvantaged hot-footed it to leafy suburbs as soon as they could. (I know I did!)
It might be that the recent flood of redundancies amongst older people, middle managers, etc. will reintroduce a stream of articulate, intelligent people who will fight this wretched government.
I now live in a country where the people I meet cannot pigeonhole me because of my accent and I regard myself as outside the class system. I won't play the game.