My parents always voted Labour when I was growing up, but that changed when they bought their council house. They supported Thatcher because, in their view, she enabled ordinary working class people like them to buy their own homes & better themselves while Labour wanted to keep them poor & dependent as tenants of the state.
They are now stereotypical retired Brexit supporting, home-owning, Daily Mail reading Tory voters. Their view is that Labour is now ‘for the immigrants’ & despises the white working class. So they despise Labour.