Boris Johnson will become British prime minister after securing victory in the battle for the Conservative Party leadership.
The former foreign secretary, who was the firm favourite to win the contest, defeated Jeremy Hunt in the ballot of Tory members.
Mr Johnson secured 92,153 of the vote compared to 46,656 for Mr Hunt to win the Tory leadership.
Boris Johnson's share of the vote - 66.4% - is slightly lower than the share won by David Cameron in the 2005 Conservative leadership election (67.6%).
Mr Johnson will be the fifth prime minister since the Second World War to have been educated at Eton College.
He will be appointed as prime minister tomorrow by Queen Elizabeth after Theresa May formally resigns from the office.
The Queen has seen 13 prime ministers come and go during her reign, with Boris Johnson soon to become her 14th.
Read more:Mixed reaction to victory of 'Mr Marmite' Boris Johnson
Tory backbencher Charles Walker had issued a plea to the party shortly before the announcement of Boris Johnson as new leader.
"Can we be kinder to the next prime minister than we have been to the current prime minister," the MP said from the stage.
Mrs May will take one last round of Prime Minister's Question in the Commons today before travelling to Buckingham Palace to offer her resignation.
Many congratulations to @BorisJohnson on being elected leader of @Conservatives - we now need to work together to deliver a Brexit that works for the whole UK and to keep Jeremy Corbyn out of government. You will have my full support from the back benches.
— Theresa May (@theresa_may) July 23, 2019
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I congratulate Boris Johnson on his clear win in the leadership contest. Our party must now unite behind the new leader and Prime Minister, so we can get on with the job of delivering Brexit, whilst maintaining a strong United Kingdom
— David Mundell (@DavidMundellDCT) July 23, 2019
Congratulations @BorisJohnson. Looking forward to continuing our discussions on achieving our shared objectives to advance the Union, deliver Brexit and restore devolved government in NI.
— Nigel Dodds (@NigelDoddsDUP) July 23, 2019
Read more:Mixed reaction to victory of 'Mr Marmite' Boris Johnson