Update: 158 MPs publicly support Theresa May ahead of confidence vote

Enough Tory MPs have requested a vote of confidence in Theresa May to trigger a contest, chairman of the backbench 1922 Committee Sir Graham Brady has announced.

Update: 15.53pm: More than 158 Conservative MPs have publicly declared they will be supporting Theresa May's leadership during tonight's confidence vote.

The tally represents a majority of the party's MPs, and, if all follow through as they have stated they will, it means Mrs May will remain leader of the party and British Prime Minister.