The Prime Minister’s resisting mounting calls for him to quit telling his Cabinet a leadership challenge ‘has not been triggered’.

79 of his own MPs now want him to step aside (as of 11am).

They include the MP for Clapham and Brixton Hill, Bell Ribeiro-Addy, who said he must set out a timetable for his departure.

One who is sticking by the PM, is Housing Secretary and Streatham and Croydon North MP, Steve Reed.

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81 MPs would be needed to trigger a formal leadership contest.

But even then, they would all need to back the same challenger, and Sir Keir’s name would remain on the ballot.