Senior Eurosceptics have fired a warning shot at Theresa May, issuing seven new “red lines” she should not cross when she meets Jean‑Claude Juncker tomorrow to try to kickstart trade talks with the European Union.

Their demands will pile pressure on May to talk tough when she has lunch with Juncker. The meeting is designed to clear the way for the commencement of talks on Britain’s future relationship with the EU to be given approval at a Brussels summit on December 14. The government has so far signalled that it will continue to accept free movement and EU regulations during the transition and May says she wants a full trade deal.

In their letter to the prime minister, more than 30 Eurosceptic former cabinet ministers,