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Boris Johnson is to finally share his last Brexit plan with EU leaders in the next 24 hours, it has emerged.

The Prime Minister's plan is understood to centre on the creation of an all-Ireland "economic zone".

It would allow agricultural and food products to move between Northern Ireland and the Republic of Ireland without checks at the border, according to RTE.

The customs will be located five to ten miles 'back' from the actual land frontier however.

Under Mr Johnson, the UK is currently insisting Northern Ireland remain completely outside the EU’s customs union for industrial goods and agricultural products.

And the leader, 55, will present these Brexit plans to Brussels as he ramps up efforts to strike a deal.

(Image: Andy Stenning / Daily Mirror)

Speaking earlier today at the Conservative Party conference in Manchester, the politician said he remained "cautiously optimistic" about the prospect of a deal despite the limited time available ahead of the scheduled October 31 withdrawal date.

He said the UK side had made some "pretty big moves" towards a deal but it was up to Brussels to respond to find the right "landing zone".

Downing Street insiders indicated the proposals should be delivered to Brussels by the end of the week, after the conclusion of the Conservative Party conference.

(Image: Jeff J Mitchell)

Chancellor Sajid Javid said a no-deal Brexit "may well happen" on October 31 despite a law aimed at preventing Mr Johnson from taking the UK out of the European Union without an agreement.

But the Prime Minister said the October 31 date would be met "whatever happens".

He said: "I'm cautiously optimistic. We have made some pretty big moves, we are waiting to see whether our European friends will help us and whether we can find the right landing zone.

"But whatever happens, we'll come out on October 31."

Senior Downing Street sources confirmed the Government plans to make a major offer to the EU later this week to try to get a deal.

But the prospect of striking agreement this week looked bleak.

Mr Javid also said he was not sure how much a no-deal Brexit would cost the economy in the short term.

He told the BBC: “I don’t think anyone really knows a full proper answer to that question. I have never pretended that if you leave without a deal it won’t be challenging.”

A senior government source said: “This is it. They’ll either be able to work with it, or they won’t. We’ll know soon enough.”