Nicola Sturgeon has described Boris Johnson as the "worst Prime Minister" in her lifetime in a damning appraisal of his time in office.
Mr Johnson delivered his final speech as Prime Minister this morning on the steps of Downing Street ahead of his Tory successor Liz Truss taking over his position as leader of the Conservative Party.
He took a swipe at independence supporters in his statement, saying they will "never succeed" in trying to break up the United Kingdom.
