David Davis has resigned as Brexit Secretary
The move comes as Theresa May prepares to face MPs about her Chequers plan.
David Davis has resigned as Brexit Secretary in a major blow to Theresa May.
The Prime Minister is hoping to win over Tory Brexiteers after a backlash against her plans for leaving the European Union.
But the Press Association understands that Mr Davis, who signed up to the plan agreed by the Cabinet at Chequers on Friday, has now quit.
Two senior sources confirmed Mr Davis' departure from the Cabinet.
His exit may embolden Brexiteer backbenchers with concerns about Mrs May's leadership.
The move comes on the eve of a major test for the Prime Minister as she faces first the House of Commons and then a potentially stormy meeting of Tory MPs and peers on Monday.
Mrs May is expected to tell MPs that the strategy agreed on at Chequers is the "right Brexit" for Britain.