British Prime Minister David Cameron warned today that he would not hesitate to veto an EU treaty change should his demands be ignored at a summit held to resolve the euro debt crisis.

"If I can't get what I want, I will have no hesitation in vetoing a treaty at 27 because I am not going to go to Brussels and not stand up for our country," Cameron said in London before arriving for the summit with his 26 EU counterparts.

Under pressure from the eurosceptic wing of his conservative party, Cameron has vowed that EU treaty change -- proposed by Germany and France as a response to the debt crisis -- must not be allowed to undermine British interests.

"We need obviously to get that stability in the eurozone that's good for European countries and good for Britain as well but also we need to protect Britain's interests," Cameron said on arrival at the EU Council in Brussels.

"Those are my aims and that's what we will be discussing," he added in a brief statement to reporters ahead of a working dinner of EU leaders devoted to changing the framework of the embattled 17-state eurozone.

Cameron notably wants to ensure that any changes to the treaty do not affect the financial powerhouse of the City of London, which plays a vital role in Britain's economy.

However, Paris and Berlin have vowed to go ahead without Britain if London does not feel able to sign up to a deal at the summit, fuelling fears of a two-speed Europe.

Britain and nine other EU countries are not in the euro but only Denmark and Britain have negotiated a so-called opt-out, meaning they are under no obligation to join.

Cameron has repeatedly ruled out Britain joining the single currency area.