The British Prime Minister Theresa May has come under increasing pressure from her own party to resign, following her mishandling of Brexit.

Government ministers are currently holding talks with senior Labour Party members in a bid to thrash out a Brexit deal which would secure the support of MPs across the house, thus cutting out the need for Mrs May to rely on the support of Brexiteer Conservative MPs.

However, the move has angered the pro-Brexit right wing of her party, who have intensified their calls for her to set a clear leaving date.

Mrs May is due to attend a meeting of the 1922 Committee of backbench Conservative MPs this evening, at which the need to set a clear date is likely to be put to her. Sir Graham Brady, chair of the Committee, has already requested “clarity” on her departure.

Leading Eurosceptic Sir Bill Cash told the Press Association: “The time has come for her to resign. She needs to be given a date. The sooner the better. But it needs to be done in an orderly manner.”

Mrs May had previously pledged to quit if her Withdrawal Deal gains majority support in Parliament, but with the deadline for Brexit now pushed back to October, it is not clear what plans she has to go if the deal is not passed.

A landslide loss of council seats by the Conservative Party at last week’s local elections has further ratcheted up pressure on Mrs May. Party bosses were quietly touting a figure of 1000 losses as their nightmare scenario – but on the night they shed in excess of 1,300 seats.

The party is expecting similar losses in the upcoming European elections, due to be held on May 23rd. Sir Geoffrey Clifton-Brown, treasurer of the 1922 Committee, has insisted Mrs May announce a “road map” for her resignation following the European elections.

Brexit Party leader Nigel Farage told the Press Association: “I’m amazed she is still there.”

Meanwhile, grassroots Conservatives are planning to vote on a motion of no-confidence in Mrs May on June 15th.

Members of the National Conservative Convention will be asked to vote on a motion stating that “we no longer feel that Mrs May is the right person to continue as Prime Minister to lead us forward in the negotiations” and “therefore with great reluctance ask that she considers her position and resigns”, Conservative Home has reported.