The Guardian has published some correspondance they recieved on the subject.
And as for the guy complaining we all have yellow teeth, it's because we are a socialist bunch at heart and still haven't got used to the privatised dental service. This used to be free but the taxes were cut so much that it couldn't be provided by the state any more. So our average man on the street saves a few thousand in tax and has to spend £15000 on dental care, or be yellow.
http://observer.guardian.co.uk/cash/...328984,00.html
We're not as bad Austin Powers though, and lots of people are going in for bleaching these days, even if it does destroy the enamel.