You read it here first
Some economic thinktank has woken up to the old news that measured in a common currency using the market's exchange rate UK GDP per head is higher than US GDP per head. It's reported (correctly) here and (incorrectly) in the Observer, which I can't find the link for now. Update: Oh dear the Telegraph's is the worst of them all.The figures are not wrong, I've been banging on about this myself for a long time (see links below), and there are reasons to prefer either PPP or market exchange rates, but you need to be careful not to assert things about 'living standards' if you are using market exchanges rates, as they definitely don't describe that for countries that have not too dissimilar spending habits.
http://fistfulofeuros.net/afoe/political-issues/its-expensive-but-were-rich
http://www.matthewturner.co.uk/Blog/2007/07/british-higher-dollar-income-per-head.html
http://www.matthewturner.co.uk/Blog/2007/07/it-keeps-rising.html
http://www.matthewturner.co.uk/Blog/2007/11/getting-richer.html
It won't last, as I've been banging on about for almost as long. Larry Elliot sets out a case for a weaker pound.