British Prime Minister, Theresa May, is facing fresh calls from Leave campaigners to walk away from negotiations if EU leaders refuse to sanction the start of the second phase of Brexit talks at their summit later this month. A series of prominent figures in the British Conservative party have signed a letter urging Mrs May to refuse to settle the UK’s so-called “divorce bill” with the EU unless Brussels agrees to a number of new demands. These include agreeing “in principle” the terms of a free trade agreement by the end of March 2018, an end to the jurisdiction of the European Court of Justice, and the freedom of movement to the UK for EU nationals when the UK leaves a year later in March 2019. “If the EU refuses to agree to these terms by the end of the December council, the UK – having exhausted every avenue – should suspend its participation in the negotiations and inform the EU that, unless they are prepared to talk to us seriously about a future free trade arrangement, we will revert to World Trade Organisation terms from March 30 2019,” the letter states. The letter was organised by the Leave Means Leave group. It comes after European Council President Donald Tusk said that if the UK offer on the border on the island of Ireland is unacceptable for Ireland, then it will also be unacceptable for the EU.