http://www.bbc.co.uk/news/business-29753529
Now to be absolutely clear, none of this is a surprise to the Treasury or chancellor. British officials have known for some time that the inflammatory demand from Brussels was coming.
What did catch them by surprise was what it sees as a deliberate leak by EU officials of the news last night - which they see as an attempt to embarrass David Cameron, as he meets other EU leaders to discuss, among other things, his controversial hopes of being able to restrict migration of EU nationals to Britain.