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

More than 80 of his own MPs now want him to step aside.

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.

More than 100 backbenchers meanwhile, have signed a letter of support for the PM.

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