I did this a while ago and got about 40 odd percent. Bit of fun I know, but it's a load of crap. I mean "Have you ever refferred to a loo as a toilet?" FFS, and the wording of the question "Was your education paid for by the tax-payer?" offends me, show's the author's contempt for anyone from a lower-'class'.
I think it should be called "I'm a snob, allow me to confirm my prejudises". (spelling, suppose that's a tax-paid education for you

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Would be interested to see Prince Harry's Chavometer percentage:)
Check out the 'About me' thread on same site for a better laugh!:D