Theresa May and Jeremy Corbyn clashed bitterly over Brexit at PMQs today - just hours before they are holding talks intended to find a joint way forward. Mrs May and the Labour leader brutally laid into each other in a particularly bad-tempered session - with each accusing the other of scuppering the chances of a deal with the EU. At one point as they traded blows, Mr Corbyn jibed that he was 'looking forward' to their talks later. And when he accused her of refusing to compromise, Mrs May retorted: 'He’s a fine one to talk about coming together when it was only last night when he agreed to actually meet me to talk about these issues. ' The pair are due to meet around at around 3pm in the PM's Commons office - depriving the Opposition leader of the chance to strike a pose outside the famous No10 door. Mr Corbyn was finally forced to climb down over his refusal to hold talks with Mrs May after an humiliating set of Commons votes last night. In a dire night for Mr Corbyn, 14 of his own MPs voted against a proposal he backed to keep Britain in the EU beyond March 29 if no deal is agreed by the end of the month. Brexit minister warns UK will REFUSE to pay £39bn divorce bill unless EU agrees to PM's backstop plan Ministers ramped up tensions with the EU today in the wake of Theresa May's historic Commons victory - warning that the £39billion divorce bill could be axed if it does not compromise. Brexit minister Kwasi Kwarteng insisted Brussels would not get a 'penny pinch' from the UK unless there was 'some give' on the hated Irish border backstop. The threat came as the PM braces for 'trench warfare' with the EU after leaders flatly dismissed calls to reopen the Withdrawal Agreement. She is due to speak by telephone to EU council president Donald Tusk and Irish PM Leo Varadkar later. Mrs May hailed her new 'mandate' from MPs last night after dramatically seeing off a Remainer bid to delay the Brexit date and getting her own plan passed in a series of high-stakes votes. The House endorsed an amendment supported by the PM to replace the backstop with 'alternative arrangements' to avoid a hard border in Ireland. Mrs May was only able to win through by bringing Brexiteers including Boris Johnson and the DUP back onside with promises that there will be fundamental changes. But the new push was immediately rebuffed by the EU, with Mr Tusk insisting there will be no changes to the core text. Irish deputy PM Simon Coveney said Mrs May was effectively threatening to 'jump out of a window' unless Brussels bowed to her demands, while French president Emmanuel Macron said the current package was 'non-renegotiable'. It is still not clear exactly what concessions the PM will be seeking - with competing calls for the backstop to be ditched altogether, loosened, expire after certain period, or the UK to have unilateral exit clause. Most of the rebels represent constituencies that voted Leave in the 2016 referendum. An amendment pushing Labour's Brexit policy was the