I reckon it's more complicated than that now - the three class structure was pre 1950s. The 60s allowed more of a meritocracy to develop which confuses things. For example, my background is working class, my mind set is working class but my income and education would put me, well, beyond working class.
Similarly, much of the old upper class are knackered; they're living off 19th century inheritance in country mansions that are bleeding them dry.
And the traditional working classes don't exist anymore; the factories and mines have closed and been replaced by MacJobs and benefits - there's no pride in being poor if there's no community to make you feel better about it.
Life, don't talk to me about life - Marvin the Paranoid Android