Boris Johnson faces a no-confidence vote.
His exit may be a matter of when, not if
Johnson is coming off an ignominious distinction
First prime minister officially found to have broken the law
he was loudly booed when he arrived at St Paul's Cathedral
Johnson has long been seen as an entertaining cheerleader for his country
He is seen as Britain's Teflon politician
at least 15% of the leader's party in the House of Commons must call for a vote,