Background:

* Chancellor Rishi Sunak and Health Secretary Sajid Javid quit Boris Johnson's cabinet, piling pressure on the PM

* Sunak says the public expect "government to be conducted properly, competently and seriously"

* Javid tells the PM he can "no longer, in good conscience, continue serving in this government"

* Both men quit after Johnson apologised for appointing a Tory MP to his government who had faced allegations of sexual misconduct

* Johnson says he is sorry to see them go; he is now reshuffling his cabinet, with Steve Barclay said to be in line for health secretary

* Other ministers have been seen in No 10 this evening, including Education Secretary Nadhim Zahawi

* Tory party vice chairman Bim Afolami quits live on TV, but many in the cabinet express support for the PM

* Labour leader Sir Keir Starmer says it's "clear the government is now collapsing" and says he would back an early election

* The PM won a vote of confidence in his leadership last month and is safe from another vote for a year unless rules are changed