THERESA May plans to call Brexit rebels’ bluff with a back-me-or-sack-me challenge.

The PM is ready to pin her future on breaking all of our existing trade ties with the EU.

2 The PM held an eight-hour summit at Chequers on Thursday Credit: © MoD/Crown Copyright

Senior allies want her to make the MPs’ Customs Union vote an issue of confidence in her leadership.

It would force Tory Europhiles to do it her way — or sink the Government and face certain election defeat.

She yesterday paved the way for a last stand, declaring: “Decisions we make now will shape this country for a generation.

“If we get them right, Brexit will be the beginning of a bright new chapter.”

2 The plan was decided on during Thursday's Chequers summit Credit: © MoD/Crown Copyright

Cabinet hardliners reckon Tory Remainers would back down from voting to stay in a Customs Union if it risked making Jeremy Corbyn PM.

Mrs May is being urged to fight to the death to implement the plan decided at Thursday’s eight-hour Cabinet Chequers summit.

Theresa May says Britain can get the Brexit deal it wants and a possible free trade deal with China

Foreign Secretary Boris Johnson says the trade deal thrashed out must be executed in full.

He told colleagues: “It has to be our bottom line, not an opening bid.”

On Friday the PM will outline “end state” divorce demands she will put to EU chiefs.

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Mr Corbyn faces a revolt as 80 MPs demand he backs staying in the single market.

But Labour’s Frank Field has warned against listening to Remainers.

He writes in The Sun on Sunday: “If Labour falls into the trap of being seen as the party that wants to dilly-dally on Brexit, voters who stuck with us last year, having voted Leave, will tell us where to go — and it won’t be No10.”