Nothing wrong with working class. My father started as an apprentice in electrical signalling with GEC, and my maternal grandfather was a carpenter (no, not that carpenter, I'm not that old). Plenty wrong with what are universally referred to as "chavs" these days. I live not far from Chatham, so I do have plenty of chance to see the specie in its natural habitat.

I'm no expert on traveller culture, but where I might once have expected to hear the greeting or salutation "chavvy", derived from the Romany, I think it is now more common to hear "Bruv" to indicate a degree of consanguinity.

Also, actually, nothing wrong with being properly spoken.