Liz Truss is the UK's next prime minister, succeeding Boris Johnson after his departure amid scandalTruss beat Rishi Sunak to win leadership of the Conservative Party and therefore the government.
Johnson and Truss are scheduled to meet the Queen in Scotland on Tuesday to formally hand over.
Graham Brady, chairman of the party's backbench 1922 committee, named Truss the winner at an event in Westminster, central London, on Monday.
Truss is due to follow Johnson to Scotland on Tuesday , where she will become prime minister in a meeting with the Queen, when the monarch formally asks her to form and lead a government.
Truss is due to give her first speech as prime minister on Tuesday afternoon, and is then expected to begin putting her Cabinet together.