Jeremy Hunt will today unveil plans for a £20billion package to soften the blow of No Deal.
Toughening his stance on Brexit, Mr Hunt will promise to 'turbocharge' preparations for No Deal – and make it clear to the EU that he is 'willing and able' to walk away if negotiations fail.
But in a swipe at Boris Johnson, he will say it is wrong to minimise concerns about the potential impact of leaving without a trade agreement.
Mr Hunt is expected to say Britain needs a prime minister 'prepared to put in the hard yards preparing for No Deal', adding: 'You cannot leave the EU on a wing and a prayer. Britain deserves better than that.'
Jeremy Hunt, a leadership candidate for Britain's Conservative Party, appears on BBC TV's The Andrew Marr Show in London
In a speech in London, the Foreign Secretary will announce a £6billion relief package for farmers and fishermen, who are forecast to be among the worst hit by No Deal, and will vow to press ahead with a £13billion corporation tax cut to kick-start the economy.
In a significant hardening of his rhetoric designed to appeal to Eurosceptic activists who will decide the leadership contest, Mr Hunt also indicated he was ready to withhold half Britain's £39billion divorce bill if no Brexit agreement is reached.
In the clearest break yet from Theresa May's withdrawal agreement, he said he would pursue a Canada-style free-trade deal – 'not Chequers' – if he becomes PM.
Today he will pledge to establish a national logistics committee to assess the need for emergency powers in the event of No Deal.
Mr Hunt has faced criticism from Eurosceptics for refusing to match Mr Johnson's pledge to take Britain out of the EU on October 31 'come what may', saying it would be folly if a deal was within sight. He refused to guarantee yesterday that Britain would leave the EU by the end of the year, saying it was a 'fake debate'.
But he insisted he was ready to take the UK out without an agreement if necessary – and said he was ready to look businesses 'in the eye' and tell them he was ready to deliver No Deal even if it meant they had to lay off staff.
Mr Hunt told BBC1's Andrew Marr Show he would do so 'with a heavy heart', and insisted he was better placed than Mr Johnson to strike a new deal with Brussels.
But he added: 'We are a country where politicians do what the people tell them to do. So if in order to do what the people tell us to do we have to leave without a deal, I would do that, but I would find support for those companies to help them weather the storms.
Some of the Brexit Party's prospective parliamentary candidates arrive on stage as supporters gather at the National Exhibition Centre for their Big Vision Rally
'As a businessman I