Nothing wiped it out. The UK's class system is alive and kicking. You're still ruled by a monarch whose only qualification for the job is that she was born into the right family. You're still ruled by hereditary Lords whose only qualification for the job is that they were born into the right family. You still have aristocrats and landed gentry. In short, you still have a system in which privilege and power is derived from birthright. It's like the Indian caste system, but without the brutality.
As someone has already said, Britain's class system is not based upon wealth and never has been. An Earl can be poor as a church mouse, but he's still an Earl. A footballer can be a millionarie but he's still not an aristocrat. A working class man can gain the trappings of middle class society or marry into the aristocracy, but he's still a working class man. It has nothing to do with how much money and assets you have. It's all about the social group you're born into.
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