Mr Fox, a leading supporter of leaving the EU, told the Sunday Times, said: “If we were not to vote for that, I’m not sure I would give it (Brexit) much more than 50-50.” With three months left until the United Kingdom is due to leave the EU on March 29, May’s Brexit deal is floundering, opening up a range of possibilities from a Brexit without a trade deal to calling Brexit off. Earlier this month, May pulled a planned vote on her deal after admitting parliament would reject it.
Lawmakers are set to vote on the deal in the week starting January 14.
Victoria Hewson, a top lawyer with London-based think-tank the Institute of Economic Affairs, warned in October Mr Fox’s job was becoming “increasingly difficult in the face of uncertainty over Brexit.
She avoided speculating about whether his frustrations might prompt him to quit his job, which involves drumming up trade deals after the UK quits the bloc.
But she told Express.co.uk the ongoing negotiations, and open-ended nature of the process, made it hard for him in his current role.
She added: “What he is possibly trying to do is get out there and make the case and show the opportunities there are when and if the UK is free to do trade deals.
“However, it’s hard to know how long they will have to wait.
“These things take time but if we had a end date and knew when this would be coming to a conclusion, I think most countries would probably bear with that.
“I think in this case it is certainly about how long it takes to get there.
“The uncertainty is a drag on morale.”
Scholar Malcolm Lowe warned in November Mrs May could not afford to lose the support of Mr Fox, one of the so-called “gang of five” pro-Brexit ministers which also includes Michael Gove, Chris Grayling, Andrea Leadsom and Penny Mordaunt.
Mrs May has described her Brexit deal, hammered out with EU negotiators, as the only way of leaving the EU with an agreement in place.
However, her proposals are far from certain to make it through Parliament.
Mark Littlewood, director-general of IEA, told Express.co.uk in November: “The problem seems to me that there is not really a Parliamentary majority for any one proposal.
So even if the cabinet does agree, I simply cannot see the maths by which her plans survive the Parliamentary process.
Mr Littlewood, speaking after a meeting with Democratic Unionist Party leader Arlene Foster, added: “I didn’t ask her about it specifically but the DUP is very unenamoured with all of this.
“And it’s worth remembering that DUP votes have been needed to get about 40 percent of Brexit votes through so far.
“You also have the European Reform Group, which numbers about 40 people, so right there, that’s 50 votes against.”