Johnson plans to continue as prime minister until a new Tory party leader is appointed by the October conference.
The choice to ontinue temporarily or leave immediately is up to Johnson.
Conservative leadership elections are automatically triggered when a Tory prime minister resigns.
But Boris has decided to stay until his party elects a new leader.
Can Boris Johnson be expelled?
Sir Keir Starmer has threatened to table a motion of no confidence in the House of Commons if the prime minister hangs on.
If the majority of parliamentarians vote against Boris’s government, he will be forced to resign as Queen.
This would pave the way for Dominic Raab to take office or for a general election.