Video report by ITV News Political Correspondent Libby Wiener
Talks between Theresa May's Government and Jeremy Corbyn's Labour party aimed at finding a Brexit breakthrough have stalled, with one of the key players describing a "disappointing" lack of progress.
The cross-party talks are a key part of her efforts to find a majority in the Commons.
It comes as the Prime Minister urged European Union leaders to delay Brexit as she strives to get a deal through Parliament, with
A Labour Party spokesperson said: “We are disappointed that the government has not offered real change or compromise.
“We urge the Prime Minister to come forward with genuine changes to her deal in an effort to find an alternative”.
Mrs May also faces resistance in the EU over her request for Brexit to be delayed potentially until June 30, with Brussels set to argue for a longer extension.
The Prime Minister wrote to European Council president Donald Tusk requesting the delay, with an option to leave earlier if a deal gets through Parliament.
ITV News Europe Editor James Mates said Mr Tusk however, is expecting a longer extension, "maybe for as much as year".
ITV News Europe Editor James Mates explains Brussels' reaction to Theresa May's request for a delayed Brexit
Mrs May said she will seek to secure ratification of the deal before European elections on May 23, but will make "responsible preparations" for the UK to take part in the polls if that does not prove possible.
Number 10 offered to continue talks with Labour about a potential compromise over the weekend, but shadow Brexit secretary Sir Keir Starmer said Mrs May needed to give groundif she wanted the process to progress.
His frustration with the progress of the talks was evident after an exchange of papers with the Government on Friday.
Sir Keir said: "So far, the Government isn't proposing any changes to the deal. In particular, it's not countenancing any changes to the actual wording of the Political Declaration.
"Now obviously that's disappointing; compromise requires change. We want the talks to continue and we've written in those terms to the Government, but we do need change if we're going to compromise."
But Number 10 insisted the Government was open to potentially changing the Political Declaration, which sets out the framework for the future UK-EU relationship.
A Downing Street spokesman said: "We have made serious proposals in talks this week, and are prepared to pursue changes to the Political Declaration in order to deliver a deal that is acceptable to both sides.
"We are ready to hold further detailed discussions this weekend in order to seek any such changes in the run-up to European Council on Wednesday.
"The Government is determined to work constructively to deliver the Brexit people voted for, and avoid participation in the European parliamentary elections."
Mrs May's request for an extension to the Article 50 process will be considered at an emergency EU summit on April 10, where it requires the unanimous agreement of the leaders of the remaining 27 member states.
EU sources said Mr Tusk is recommending a longer postponement of one year, with a break clause in the case of earlier ratification, in a so-called "flextension" deal.
Irish premier Leo Varadkar said a longer delay to Brexit "might make more sense" than the UK seeking "rolling extensions where there is an extension every couple of weeks or every couple of months because that just adds to the uncertainty for citizens, for businesses and for farmers".
Emmanuel Macron's France is viewed as one of the EU countries most cautious about agreeing to an extension.
Prominent Brexiteer Jacob Rees-Mogg suggested the UK should retaliate to any long extension by using its continued membership to block moves towards closer EU integration.
"If a long extension leaves us stuck in the EU we should be as difficult as possible," he tweeted.
"We could veto any increase in the budget, obstruct the putative EU army and block Macron's integrationist schemes."
Mrs May has already obtained one extension to the Article 50 withdrawal process, postponing the date of Brexit from March 29 to April 12 - next Friday.
She was forced to seek a second delay after her deal was rejected for a third time by MPs last week.
In her letter, Mrs May said that if ongoing talks with Labour do not lead to a "single unified approach soon" then the Government would instead look to establish a "consensus" on options on a future relationship that could be put to the Commons.
She wrote: "The Government stands ready to abide by the decision of the House, if the Opposition will commit to doing the same."
Labour opened nominations on Thursday for candidates to stand in the European elections if the UK participates.
But Foreign Secretary Jeremy Hunt said there was "zero appetite" for the UK to elect MEPs almost three years after voting to leave the EU.