The ex-PM urged his supporters to stick with the agenda he set out to deliver victory at the next general election.
Johnson
Boris Johnson ‘living in property connected to wealthy Tory donor’
Since leaving office in September, Mr Johnson has declared more than £1 million in speaking fees.
Three prime ministers inside seven weeks – how did that happen?
Here is a timeline of the recent political crises which engulfed the leadership of two prime ministers and ultimately led to their downfall.
What next for Boris Johnson, the former PM with aspirations to lead again?
Mr Johnson was forced late on Sunday to admit he could not unite his warring party, seemingly surrendering to Rishi Sunak.
‘Up for it’ Boris Johnson flying back from Caribbean to run for prime minister
Having resigned in disgrace just six weeks ago, Mr Johnson was attempting an extraordinary comeback.
Boris Johnson ‘up for it’ and will fly back from Caribbean to run for PM – ally
Sir James Duddridge says the ousted prime minister is preparing to stand to replace Liz Truss.