Factbox-Now UK's Boris Johnson has quit, who could replace him?

FILE PHOTO: British Foreign Secretary Liz Truss sits with Defence Secretary Ben Wallace and Ukraine's ambassador to the United Kingdom Vadym Prystaiko at the Conservative Party Spring Conference in Blackpool, Britain March 19, 2022. REUTERS/Phil Noble

LONDON (Reuters) - Who could replace Boris Johnson as Britain's prime minister? Below is a summary of those who have announced they want the job and others who could be in the frame. The race follows Johnson's announcement on Thursday he was resigning, bowing to calls from ministerial colleagues and lawmakers in his Conservative Party.

There is no clear favourite and they are not listed in order of likely prospects. The rules of the leadership contest will be announced next week.