Some UK lawmakers confident they can trigger a confidence vote in PM May: BBC

British Prime Minister Theresa May arrives to meet with European Council President Donald Tusk and discuss Brexit, at the EU Council headquarters in Brussels, Belgium December 11, 2018. REUTERS/Yves Herman

LONDON (Reuters) - Brexit-supporting lawmakers in British Prime Minister Theresa May's Conservative Party are increasingly confident they have enough support to trigger a no confidence vote in her leadership, the BBC reported on Wednesday.

A leadership challenge is triggered if 48 Conservative lawmakers write letters asking for one to the chairman of the party's so-called 1922 committee, Graham Brady. May could be toppled if 158 of her 315 lawmakers vote against her.

(Reporting by Guy Faulconbridge; editing by Kate Holton)