"What is working class? I don't know. It's based on clothes, shoes and voice, isn't it?" In an estate agents, whose properties are so expensive that prices are not even advertised in the window, a pinstriped gentleman pondered the question. He appealed to a colleague, and got an instant response. "Blue-collar workers, non-professionals. Yah, estate agents are working class." Both men were dressed like bankers, wore brogues and could drawl for SW3 - but they were, apparently, working class.