UK Prime Minister Theresa May will face a vote of confidence in her leadership later on Wednesday.
Speaking outside 10 Downing Street, Mrs May said: “I will contest that vote with everything I have got.”
She said a new prime minister would have to scrap or extend Article 50, the mechanism taking Britain out of the EU on 29 March, “delaying or even stopping Brexit”.
Conservative MPs will vote from 18:00 GMT to 20:00 GMT.
A result is expected an hour or so later. Read more