Wycombe MP Steve Baker has stepped down from his role as junior Brexit minister following a shock exit by Brexit secretary David Davis.

Theresa May now faces a leadership crisis after Mr Davis savaged the government’s approach to Brexit while dramatically quitting as the minister responsible for the UK’s departure from the European Union.

Mrs May had hoped that the cabinet agreement secured on Friday at Chequers would help her deliver the “right Brexit” for the UK, with an offer to Brussels to share a “common rulebook” on goods and form a new UK-EU free trade area.

Mr Davis’s departure just 48 hours after being part of the cabinet that agreed to Mrs May’s plans also triggered the resignation of Mr Baker, while fellow Brexit minister Suella Braverman is also reported to have stepped down.

Speaking about Mr Baker's exit, Wycombe In Europe spokesman Ian Morton said: “Steve Baker resigning is just the latest example of the chaos that Brexit has caused our country.

“The politicians are never going to be able to sort this mess out to a satisfactory conclusion.

“The ‘fudge’ that is Theresa May’s latest attempt to unite the Conservative party has now shown leave voters clearly that Brexit is not going to be delivered as they wish.

“The only way forward to get us out of this mess is a people’s vote on the final deal.

“As David Davis himself said: 'If a democracy cannot change its mind, it ceases to be a democracy'.”

In his resignation letter, Mr Davis said the “current trend of policy and tactics” was making it look “less and less likely” that Brexit would deliver on the referendum result and the Tory commitments to leave the EU customs union and single market.

Mr Davis said “the general direction of policy will leave us in at best a weak negotiating position, and possibly an inescapable one”.

But according to the New Statesman, it is Mr Baker’s resignation that Mrs May needs to worry about.

The magazine described Mr Baker as the “hard Brexiteers’ man on the inside – and, effectively, their canary in the coalmine”, saying his “presence on the payroll” was a sign that Mrs May would “deliver something that satisfied the desire of he and his many acolytes for a hard, clean break with the EU”.

Political correspondent Patrick Macguire wrote: “His departure proves that desire isn’t going to be sated. That much is obvious.

“Rather less obvious to many people at this point is just how damaging Baker’s return to the trenches is going to be for the Prime Minister’s authority.”

Mr Baker has been contacted for comment.