Theresa Might has accused MPs who refuse to again her blueprint for post-Brexit commerce with the EU of “enjoying politics” with the UK’s future.
Ex-International Secretary Boris Johnson stepped up his assault on the so-called Chequers plan, calling it “deranged”.
However Mrs Might advised the Sunday Occasions it was the one workable technique – regardless of its rejection by the EU.
The PM additionally introduced plans to cost international home-owners extra tax because the Tory convention begins in Birmingham.
Mrs Might says her plan for the UK and EU to share a “widespread rulebook” for items, however not providers, is the one credible option to keep away from a tough border between Northern Eire and the Irish Republic.
The technique has been fiercely criticised by Conservative Brexiteers, who say it might compromise the UK’s sovereignty and betray the 2016 referendum vote. It has additionally been attacked by EU leaders, who say it is going to undermine the only market.
And writing within the Sunday Telegraph, ex-attorney common Dominic Grieve warned the PM she confronted a “well mannered insurrection” by pro-EU MPs, with a “important” quantity ready to again one other referendum if a deal couldn’t be reached.
In the meantime, the Conservative Get together has apologised after a technical problem with its convention app meant Tory MPs had their telephone numbers and different private information revealed. The difficulty has since been resolved, the social gathering mentioned.
The UK’s information watchdog, the Data Commissioner’s Workplace, mentioned it might examine the breach.
In her Sunday Occasions interview, Mrs Might mentioned: “The one proposal on the desk for the time being that delivers… is the Chequers plan.”
She challenged the EU to return ahead with counter-proposals, whereas saying of Labour, “you may’t consider what they are saying”.
Each have declared her plan to be unworkable, and final week Labour members voted to maintain the choice of one other referendum open if MPs weren’t pleased with the ultimate deal reached.
Mrs Might’s message to Tory MPs was that the social gathering “all the time places nation first and places the nationwide curiosity first”.
She was “not bluffing” when she mentioned “no deal is healthier than a foul deal”, Mrs Might advised the Solar on Sunday, however she thought a great deal may very well be reached.
By Chris Mason, BBC political correspondent, in Birmingham
Identical to the Labour convention final week, the Conservatives are eager to point out us they’ve loads of songs on their playlist.
However similar to the Labour convention final week, one report is louder than all of the others and appears jammed on repeat: Brexit.
Autumn ensures two issues: leaves falling off bushes and Conservative conferences in which there’s a sequence of deftly choreographed Johnsonian interventions, earlier than and through the principle occasion.
Forty-eight hours on from his four,000 or so phrases for the Day by day Telegraph, one phrase from Mr Johnson is ample to seize a headline or two at the moment: “deranged”.
The large query of the following few days, past the Brexit noise: does the PM supply any indication, nevertheless imprecise, of the potential of her shifting on her a lot criticised Brexit plan?
On different issues, Mrs Might advised the Sunday Occasions: “There is a long-term job to do. As a result of it’s not nearly Brexit, it is concerning the home agenda as effectively.”
She mentioned folks and companies who didn’t pay tax in Britain would face the next stamp responsibility levy of as much as three% after they purchased property within the UK – to cease them driving up home costs.
The cash can be used to fight tough sleeping.
She additionally revealed plans for a Pageant of Nice Britain and Northern Eire to showcase the nation in January 2022 – months earlier than the following scheduled common election.
And Well being Secretary Matt Hancock mentioned well being officers would produce pointers on the period of time younger folks ought to spend on social media.
Mr Johnson – who stop the cupboard in July in protest on the Chequers plan – once more challenged Mrs Might’s place, telling the Sunday Occasions that he, in contrast to the PM, had campaigned for Brexit.
On Friday, he described her strategy as “merely insupportable” and refused to rule out a management problem.
Mr Johnson additionally set out home coverage concepts, together with constructing a bridge between Britain and Eire and placing the HS2 scheme on maintain to concentrate on a rail hyperlink in northern England.
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In the meantime, Mr Grieve warned the Brexit row was “paralysing authorities” and damaging the Conservatives’ status.
“A no-deal Brexit is a proposal so damaging to our future that it can’t be accepted,” he wrote.
“So the one attainable response have to be to return to the British voters and ask them what they need. That, it appears to me, is nice pragmatic Conservative place.”
The UK is because of go away the EU on 29 March 2019, and negotiations on the phrases of exit and future co-operation are persevering with.