Who will become UK's next PM if May loses no-confidence vote over Brexit?

Lawmakers in British Prime Minister Theresa May's Conservative Party on Wednesday triggered a confidence vote in her leadership over Britain's planned divorce from the European.

May has vowed to fight on as leader, but if she loses the confidence vote later on Wednesday she will be out of a job, and a contest to replace her will begin.

BORIS JOHNSON, 54

The former foreign minister is May's most outspoken critic over Brexit. He resigned from the cabinet in July in protest at her handling of the exit negotiations.

Johnson, regarded by many euroskeptics as the face of the 2016 Brexit campaign, set out his pitch to the membership in a bombastic speech at the party's annual conference in October - some members queued for hours to get a seat.

JEREMY HUNT, 52

Hunt replaced Johnson as foreign minister in July and has urged the Conservative membership to set aside their differences over Brexit and unite against a common foe: the EU.

Hunt voted to remain in the EU in the 2016 referendum. He served six years as Britain's health minister - a role which has made him unpopular with many voters who work in or rely on the state-run, financially stretched National Health Service.

JACOB REES-MOGG, 49

A flamboyant millionaire who cultivates the image of an English gentleman from days gone by, Rees-Mogg has developed a cult following among those who want a more radical departure from the EU than May is proposing.

Rees-Mogg, the head of an influential eurosceptic group of lawmakers, announced he had submitted a letter of no confidence in the Prime Minister the day after she unveiled her draft Brexit deal.

DOMINIC RAAB, 44

Britain's Brexit negotiator quit May's government on Thursday in protest at her draft exit agreement, saying it did not match the promises the Conservative Party made at a 2017 election. Raab served only five months as head of the Brexit department, having been appointed in July.

SAJID JAVID, 48

Javid, a former banker and champion of free markets, has served a number of cabinet roles and scores consistently well in polls of party members. A second-generation immigrant of Pakistani heritage, he has talked about having a portrait of former Conservative Prime Minister Margaret Thatcher on his office wall.

Javid voted 'remain' in the 2016 Brexit vote but was previously considered to be euroskeptic.

MICHAEL GOVE, 51

Gove, one of the highest-profile Brexit campaigners during the referendum, has had to rebuild his cabinet career after falling early to May in the contest to replace David Cameron, who resigned the day after losing the 2016 Brexit referendum.

High-energy, and seen as one of the most effective members of cabinet in bringing forward new policies, Gove has become a surprise ally to May and so far backed her Brexit strategy.

Gove teamed up with Boris Johnson during the 2016 Brexit campaign only to pull his support for Johnson's subsequent leadership bid at the last moment and run himself.

DAVID DAVIS, 69

Davis, a leading euroskeptic, was appointed to lead Britain's negotiations with the EU in July 2016, but he resigned two years later in protest at her plans for a long term relationship with the bloc.

PENNY MORDAUNT, 45

Mordaunt is one of the last remaining pro-Brexit members of May's cabinet, where she serves as international development minister. Many had expected her to join the wave of resignations that followed the publication of May's draft withdrawal deal.

ANDREA LEADSOM, 55

Leadsom, another pro-Brexit campaigner who still serves in May's cabinet, made it to the last two in the 2016 contest to replace Cameron. But, rather than force a run-off vote against Theresa May, she withdrew from the contest. She currently runs parliamentary business for the government.

ESTHER MCVEY, 51