LONDON - Brexit Secretary David Davis, who has been leading UK negotiations to leave the EU, has resigned from government.
He told the BBC that he was no longer the best person to deliver the PM's Brexit plan - agreed by the cabinet on Friday - as he did not "believe" in it.
He said the "career-ending" decision was a personal one but he felt the UK was "giving away too much and too easily" to the EU in the negotiations.
Mrs May said she did not agree but thanked him for his work.
The resignation is a blow to Mrs May as she seeks to win over Eurosceptic MPs to her proposed Brexit vision, which would form the basis of the UK's position in on-going talks with the EU.
Dominic Raab, who campaigned for Leave during the UK's 2016 EU referendum, has been promoted from housing minister to take over from Mr Davis.
The UK is due to leave the European Union on 29 March 2019, but the two sides have yet to agree how trade will work between the UK and the EU afterwards.
There have been differences within the Conservative Party over how far the UK should prioritise the economy by compromising on issues such as leaving the remit of the European Court of Justice and ending free movement of people.
Mrs May's Conservative Party only has a majority in Parliament with the support in key votes of the 10 MPs from Northern Ireland's Democratic Unionist Party, so any split raises questions about whether her plan could survive a Commons vote - and has also led to renewed questions about whether she will face a challenge to her position.(FA)