UK Conservative lawmaker Rees-Mogg to submit letter of no confidence in PM May

Leading Conservative Party Brexiter Jacob Rees-Mogg attend the presentation of their trade plan for a post-Brexit Britain, in London, September 24, 2018. REUTERS/Toby Melville

LONDON (Reuters) - Senior eurosceptic UK Conservative lawmaker Jacob Rees-Mogg will submit a letter of no confidence in Prime Minister Theresa May on Thursday, a spokesman for the influential eurosceptic group of Conservative lawmakers he leads said.

A challenge is triggered if 48 Conservatives write such letters. May could be toppled if 158 of her 315 lawmakers vote against her.

(Reporting by Elizabeth Piper, Writing by Kylie MacLellan)