Eurozone crisis: PM vows to fight for national interest

David Cameron has said he will fight to protect the UK national interest in discussions over a new EU Treaty.

The prime minister told MPs "the more eurozone countries ask for, the more we will ask for in return", including safeguards about the financial sector.

Asked by one Conservative MP to show "bulldog spirit" in Friday's EU summit, he said he would do "exactly that".

But Labour leader Ed Miliband said the UK had been "left on the sidelines" and unable to influence events.

Nick Robinson reports.