A letter from the European Research Group (ERG) of Conservative MPs to the Prime Minister has been passed to The Times.
Commenting, Chris Lelie MP, a leading supporter of the Open Britain campaign, said:
“The ERG have long felt they can dictate Government policy and they are brazenly advocating the hardest of hard Brexits.
“They continue to pretend we can have our cake and eat it, but they get away with it because of the Cabinet’s refusal to admit the truth that the Brexit we were promised can never be delivered.
“With Brextremists on the rampage, people have every right to keep an open mind about whether Brexit is the right choice for our country.”