The ex-PM urged his supporters to stick with the agenda he set out to deliver victory at the next general election.
What could Rishi Sunak’s Cabinet look like?
The next prime minister will start assembling a top team that he will hope can return a measure of stability to the country.
Rishi Sunak’s first statement as Tory leader in full
The former chancellor spoke at Conservative Party headquarters. Here is a transcript of his address.
Rishi Sunak: the leader who foresaw the financial chaos he now inherits
The former chancellor will become the first non-white prime minister, the first Hindu in the top job and also arguably the richest occupant of No 10.
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.
Sunak will be just as bad as Johnson for Scotland, says Ian Blackford
The SNP Westminster leader’s comments come after Boris Johnson’s dramatic withdrawal from the Tory leadership contest.
Return of Boris Johnson would be ‘guaranteed disaster’, says Tory minister
Northern Ireland minister Steve Baker, an influential figure on the Tory right, is backing former chancellor Rishi Sunak.
Swinney urges Tories to ‘do the decent thing’ and call general election
Scottish Deputy First Minister John Swinney made the call as the deadline approaches for candidates to declare in the Tory leadership contest.
Rishi Sunak promises ‘integrity and professionalism’ as he enters Tory race
The former chancellor became the second candidate to declare their prime ministerial ambitions.
Rishi Sunak, predictor of chaos, takes another tilt at No 10
The ex-chancellor lost out to Liz Truss in the last leadership contest just six weeks ago after warning her tax plans would bring turmoil.