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A fresh Brexit row is looming after top Tory Philip Hammond ordered full "modelling" of the UK's final deal with the EU.

The Chancellor will present MPs with detailed predictions of how the deal will affect Britain's economy and everyday life.

Previous forecasts by the Chancellor have enraged Brexiteers - who claim they are too pessimistic about the prospects of life outside the EU.

The forecasts will be presented before MPs get a "meaningful" vote on Brexit in Parliament later in the year.

Mr Hammond told the BBC's Andrew Marr Show: "We've made a commitment that when we come to parliament with a deal for a meaningful vote, we will publish the relevant information parliament will need to see to understand the deal.

"And that will include modelling the deal itself.

(Image: PA)

"We will certainly model the deal that is presented to Parliament."

The model is likely to end up being compared to the prospects of a No Deal Brexit, ramping up pressure on MPs to accept Theresa May's deal or leave with nothing at all.

Yet there is a looming possibility there will not even be a deal for MPs to vote on.

Talks are still deadlocked between London and Brussels about how to solve the need to keep the Northern Ireland border open.

The Chancellor today warned a No Deal Brexit will force him to draw up an entire new Budget.

And while cruel austerity continues for millions of hard-working Brits, big business could see tax slashed as an incentive to stay in the UK, he hinted.

(Image: Getty Images Europe)

"If our businesses are no longer able to trade with European Union neighbours, if their supply chains are cut off, they will have to find different markets and different ways of doing business," he said.

"Of course, any government would want to support them in doing that, ensure that we do everything we can to facilitate what will be very big transition in the way the UK economy works.

"The economy will change. It will have to restructure itself over a period of time and that will be a fairly major transition.”

Shadow Chancellor John McDonnell accused Mr Hammond of a "shocking" display of "callous complacency" that was "cut off from the real world".

"He seems to gave accepted a No Deal Brexit and he does want us to be like Singapore - a tax haven that will undermine our manufacturing base and put living standards at risk," Mr McDonnell said.