Theresa May is facing a Cabinet revolt after attempting to shore up support for her Brexit plans during an hour-and-a-half long conference call with her ministers.

Esther McVey, the Work and Pensions Secretary, is said to have told the Prime Minister that she was "devastated" by plans to extend the Brexit transition period in a bid to strike a deal with the EU.

Sajid Javid, the Home Secretary, warned the Prime Minister there must be a time limit on her customs backstop amid concerns that it could leave Britain indefinitely tied to Brussels.

He is said to have directly asked the Prime Minister if she had "explicitly threatened the EU with no deal" amid mounting concerns that Mrs May is making too many concessions to secure a breakthrough.

It comes as the Prime Minister faces one of the most pivotal weeks of her Premiership amid suggestions that Tory MPs are poised to trigger a confidence vote.

In an opinion piece ahead of appearing in front of MPs, Mrs May said "the finish line is in sight" in Brexit negotiations.

She added: "As we enter the final, crucial phase of the talks there will undoubtedly be some unexpected challenges to which we must rise."