Liz Truss will be the new UK prime minister after defeating Rishi Sunak in the Tory leadership contest.
It was a closer result than many pundits expected, with Truss taking 57% of valid votes cast.
Speaking at a conference centre in Westminster, she thanked Sunak for a “hard-fought campaign” and pledged to deliver a “bold plan”.
Meanwhile, runner-up Rishi Sunak has tweeted his reaction after losing out to Liz Truss, saying that Conservatives are “one family” and should unite behind the new leader.
“It’s right we now unite behind the new PM, Liz Truss, as she steers the country through difficult times,” he has said.
Truss will become prime minister on Tuesday after travelling to meet the Queen at Balmoral in Scotland.
The current foreign secretary is under immediate pressure to announce a plan to tackle soaring energy costs.
She is understood to be considering a freeze on energy bills, with an announcement potentially scheduled for Thursday.