New York Times article on this:
http://tinyurl.com/n29lwg
One interesting line in there...somewhere it says in Britain competition is so fierce you can get prepaid plans for as little as £10; actually it should say you can get prepaid plans for as little as £0 (I think we can agree that's pretty little)....also it doesn't mention the ability to call internationally on mobile plans for as little as 3p through a third party provider or on one carrier 4p another 5p and another 6p....very hard to beat that.