"Basically eurozone countries in my view have to recognise they have got to do more together faster, they have got to get ahead of the market rather than responding to the next crisis," he told lawmakers in the House of Commons.

Cameron repeated his Conservative party's position that "we've got to stay out of the eurozone", but noted that 40 percent of British exports go to countries with the single currency.

The eurozone is under immense pressure on all fronts to deal with its spreading debt crisis, as a rift on rescue strategies and even on the need for a crisis summit deepened on Wednesday.

The next head of the European Central Bank, Italian central bank chief Mario Draghi, issued a blunt warning that the solvency of eurozone countries should not be taken for granted.

Copyright AFP (Agence France-Presse), 2011