Nicolas Sarkozy, the French President, is working with European Union officials and diplomats to plan a special "legal arrangement" to bypass Ireland's referendum rejection.

Mr Sarkozy takes over the EU's rotating presidency in July and will be tasked with resurrecting, for a second time, Lisbon Treaty proposals first contained in the European Constitution rejected by French and Dutch voters three years ago.

Diplomats and officials have no intention of letting the Irish no vote sink a blueprint to boost the EU's powers on the international stage and to create a President of Europe.

Gordon Brown has already phoned Paris to promise Mr Sarkozy that Britain will ignore Ireland to continue parliamentary ratification of the EU Treaty.

Jean-Pierre Jouyet, the French Europe Minister, has hinted that Paris already has a legal "fix", such as plans revealed in The Daily Telegraph on Wednesday, to keep the EU Treaty alive.

"The most important thing is that the ratification process must continue in the other countries and then we shall see with the Irish what type of legal arrangement could be found," he said.

"We must remain within the framework of the Lisbon treaty."

Eight countries are still engaged in parliamentary ratification of the Treaty but are expected to have finished, without any upsets by the autumn.

Plans to find a "mechanism" keeping Ireland within the EU but temporarily outside the Lisbon Treaty will then be tabled at an October or December meeting of Europe's leaders.

"Ireland must not stop the process of getting the Treaty through. Then we can take stock," said a diplomat close to negotiations.

Mr Brown will join Mr Sarkozy and other EU leaders at a Brussels summit next Thursday to vow that it is business as usual on pushing the Treaty through.

Brian Cowen, the Irish Taoiseach, is expected to support the calls for ratification to continue in other countries and to plead that Ireland is not left behind.

But the British Prime Minister will face strong domestic calls for Parliament's ratification of the Treaty to be halted.

The Conservatives will revive demands for a British referendum as a ICM poll yesterday found that Britons would vote against the Lisbon Treaty by 51 per cent to 28 per cent.

Neil O'Brien, Director of Open Europe, said: "The argument for a referendum in Britain is now overwhelming. Europe's political establishment plan to carry on regardless. Only a referendum in Britain can finally kill this thing off."

Nigel Farage, leader of the UK Independence Party, argued that the EU must honour the Irish vote, the only referendum to place on the Treaty in the EU's 27 member states.

"I suspect that the EU extremists will simply try to ignore it as they did the French and Dutch results," he said.

"The third reading of the treaty in the House of Lords next week must be halted because the project now has no legitimacy."

There are advanced plans in Brussels for a "bridging mechanism" to allow Ireland to be removed from the list of signatories to the Lisbon Treaty after the EU's 26 other member states have ratified it.'

Ireland will continue to remain in the euro and be covered by existing Treaties but will be left out of the creation of an EU president and foreign minister, which would proceed as planned.

By late 2009 or early 2010, when Croatia joins the EU, an amending "Accession Treaty" will be signed by all members including Dublin.

Incorporated into it would be a series of protocol texts giving paper "opt-outs" on controversial Irish EU issues, such as taxation powers or greater military co-operation.

Ireland, like the rest of the Europe, does not hold referendums on EU enlargement treaties and with new protocol opt-outs Dublin may get the Treaty past the Irish parliament without another popular vote.