A secret letter from Boris Johnson and Michael Gove giving Theresa May instructions on how to orchestrate a hard Brexit has emerged.
The memo demands the Prime Minister, who underlined her resolve "for leaving the European Union according to [194590] The Mail on Sunday .
The letter also sets out a date for transition arrangements between the EU and UK to end of 30 June 2021, the newspaper said.
Mr Johnson and Mr Gove are also said to have urged the Prime Minister to ensure its members of the team fall behind their Brexit plans by "clarifying their minds" and called for them to "internalise the logic".
Philip Hammond who backed remains and wants a softer Brexit, for lacking the "sufficient energy" in preparing for the UK's future outside the bloc.
A senior Government source told the Mail The Foreign Secretary and Environment Secretary had conducted a "soft coup" and described Ms May as their Downing Street hostage.
The letter, titled EU Exit - Next Steps, is marked "Gavin Barwell .
It states: "Your approach is governed by sensible pragmatism"
"If we are to counter those who wish to frustrate that end, there are ways of underlining your resolve.
"
" We are profoundly worried that in some parts of the government.
"We have heard it that we are not going to start the preparation on the basis of 'No Deal' because we are seriously concerned, that would leave us over a barrel in 2021.
"We all want you to push your agenda forward with confidence and have your Government articulate the following ..."
The letter suggests both sets aside their differences following last year's Tory leadership contest, when Mr Johnson dramatically ruled himself out of the race after Michael Gove's shock entry into the contest.
PA