David Davis, the former Brexit Secretary, is prepared to join Eurosceptic MPs and vote against the Government next week in a move that could force ministers into a climbdown.

Mr Davis, who quit last week in protest at the Chequers compromise, is willing to back an amendment which will enshrine in law a commitment that there will be no customs border down the Irish Sea.

It is one of four amendments to the Government's flagship trade bill that have been tabled by Eurosceptics in a bid to block the Prime Minister's Chequer's compromise over Brexit.

The Prime Minister yesterday invited "softer" Eurosceptics to her Chequers rural retreat shortly after Donald Trump, the US President, had left. Brexiteers believe that she is trying to divide Eurosceptics in a bid to avert a mass rebellion on Monday.