Rishi Sunak has vowed to provide "stability and unity" after weeks of Tory-inflicted chaos in an 86-second speech.
The new Conservative leader said he was "humbled and honoured" to get the backing of Tory MPs, who handed him the keys to No10.
In a televised address, he paid tribute to his crisis-hit predecessor Liz Truss, and described her 7-week stint in Downing Street as leading with "dignity and grace through a time of great change".