THERESA MAY is under increasing pressure from her party to quit as Prime Minister after a senior backbencher called on her to set out a clear “road map” to her resignation.

A “record number” of Tory MPs think that she should step aside, according to new figures revealed today by political blog Conservative Home.

The website found that 82 per cent of its survey’s respondents want her to call a leadership election.

This is compared to last month’s figures that showed 71 per cent of respondents wanted her to quit.

Impatience over her failure to set a date for standing down is growing while cross-party Brexit negotiations between her government and Labour are set to continue today.

The discontent over her leadership was reported to be over Brexit being delayed and disastrous local election results last week when the Tories lost more than 1,300 seats.

Sir Geoffrey Clifton-Brown, treasurer of the powerful 1922 committee of backbench Tory MPs, said Ms May should announce a “road map” for her departure after the European Parliament elections set for May 23.

He told the BBC: “We are now having to face the prospect of European elections which none of us wanted to face. They are going to happen.

“And, I would have thought that fairly soon after that would be time for her to think about setting a schedule to find her successor.

“That is regardless of whether there is a deal on offer or not. We should move on as Conservatives.”

Ms May has said she will step down if her Withdrawal Agreement is ratified, but has not stated how long she intends to stay if no deal is reached.

She is hoping that her Cabinet and Labour agree to a “compromise” deal that can command majority support from the Commons, after the deadline for Brexit was extended to the end of October.

Reports over the weekend suggested that Ms May is poised to offer Labour a temporary customs arrangement with the EU to break the Brexit deadlock.

Senior Labour figures cast doubt on the prospect of progress, as it is claimed that two-thirds of Labour MPs would demand a second referendum as part of their conditions for supporting any Brexit deal agreed with the government.

Around 100 Tory MPs are estimated to be prepared to block any “soft-Brexit” deal that involves a customs union, according to 1922 committee member Nigel Evans.