"David Cameron has admitted his party is unlikely to be able to hold a promised referendum on the Lisbon Treaty once it has become law, paving the way for a policy U-turn that will infuriate Tory Eurosceptics.
"Only the Czech Republic is yet to sign off the document, which is fiercely opposed by many Tory MPs. Vaclav Klaus, the Czech President, is expected to sign the treaty should its constitutional court decide that it does not violate Czech law. The ruling is expected today.
"Mr Cameron said that his party would "do what we can to make good all our promises", but finally conceded that a chance to hold a vote on the treaty was fading rapidly. It is widely anticipated that he will soon formally announce that a Conservative government will not hold a referendum, despite giving the public a "cast-iron guarantee" in 2007 that they would be given a vote on the treaty."