REBEL pro-EU Tories are plotting to bring down Theresa May and install a cross-party government as a last resort to cancel Brexit, it emerged today.

Ringleader Dominic Grieve has admitted he could back a new government, consisting of both Tory and Labour MPs, which would exist for the sole purpose of calling a second referendum.

2 Remainer MPs are threatening to bring down Theresa May Credit: Getty Images - Getty

And he claimed as many as 100 Conservative MPs are prepared to support the move, which would see Mrs May kicked out of power and replaced by a stand-in PM.

Furious Brexiteers accused the ex-minister of "rank disloyalty" over the apparent threat.

Mr Grieve said a second referendum is needed because the Prime Minister won’t be able to force her Chequers deal through the Commons.

He told the New Statesman his preferred option would be for the current Government to accept a rerun of the referendum.

2 Dominic Grieve says he could support a cross-party government Credit: AFP or licensors

But he added that if Mrs May continues to rule out a fresh Brexit vote, she could be toppled and replaced with a new government drawing ministers from multiple parties.

That administration would force through a second referendum but then disband itself after a few months, once it has succeeded in scrapping Brexit, he claimed.

Mr Grieve said: “It would be fairly radical. Ultimately, any government is one which enjoys the majority of support of members of Parliament to carry out a policy.

“So, it would have to be on a cross-party basis.”

He added: “There is a very curious level of majority consensus in my view that the Brexit process is very risky, that No Deal is an unacceptable outcome, and that any deal brought back by the Government, however worthy it may be and however well negotiated, is likely to have serious downsides to it.”

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He insisted that the radical proposition could attract enough support from pro-Remain Tories to survive.

The plan enraged Brexiteers today - ex-leader Iain Duncan Smith told The Sun: "Dominic Grieve would throw a lifeline to Jeremy Corbyn, attacking his own Prime Minister all so he can renege on the democratic vote of 2016 which he has never accepted.

"On the Richter scale of disloyalty, this is an out-and-out 10."

Britain hasn’t had an emergency cross-party government since WW2, when Winston Churchill and Clement Attlee teamed up to present a united front against the Nazi threat.

Prime Minister Theresa May believes her Chequers plan is the only way to deliver Brexit

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