Deputy PM Clegg said on Thursday that the behavior of the rebel lawmakers could leave Britain isolated in the EU or outside it altogether saying "You will never achieve (anything) by stamping your foot and saying, 'Well we want to be part of this club, we want to unilaterally rewrite the rules of the games, and we want to pick and choose unilaterally what we sign up to,'" said Clegg, the leader of the pro-European Liberal Democrats, the junior party in Cameron's coalition government.
UK risks sliding to EU Exit
01 November 2012, 18:20
"My worry is that it is a much shorter leap from that to an outright crisis which would leave the United Kingdom fully marginalized or even out of the European Union than people seem to imagine," Clegg said.
George Osborne warned that Britain would veto any deal on the budget that would be bad for the UK taxpayer.
The EU's 1 trillion Euro (US$1.3 trillion) long-term spending plan has become the focus of a wider debate in Britain about the benefits of membership of the union, just as the subset of members in the single currency zone attempts to fight its long-running debt crisis with closer integration.