David Cameron said he would resign as prime minister by October, after Britons ignored his plea to stay in the European Union and voted in a referendum to leave.
Cameron addressed the world's media outside his Downing Street offices on Friday morning as financial markets pummeled the value of the UK's currency, the sterling, and investors sold off British shares after the 52-to-48-percent victory for the "Leave" campaign was confirmed.
As he spoke under the gaze of cameras crammed into the narrow London street, celebratory horns sounded from cars passing nearby and "Leave" supporters marked their victory by waving Union Jack flags.
"The British people have made the very clear decision to take a different path and as such I think the country requires fresh leadership to take it in this direction," Cameron said.
"I do not think it would be right for me to be the captain that steers our country to its next destination."
He sought to reassure investors that the country's economy was "fundamentally strong," after sterling plunged to its lowest since 1985 and European shares fell more than 8 percent — on course for their worst-ever day's trading.
Making the statement alongside his wife Samantha, Cameron choked back tears. He said he had already advised Queen Elizabeth of his decision to stand down.
Cameron, 49, Britain's prime minister for six years, gave no detailed timetable for his departure but said there should be a new leader by the time his Conservative Party holds its annual conference in October.
"This is not a decision I've taken lightly but I do believe it is in the national interest to have a period of stability and then the new leadership required," he said.
"I think it's right that this new prime minister takes the decision about when to trigger article 50 and start the formal and legal process of leaving the EU," he said. Article 50 of the EU's Lisbon Treaty deals with the mechanism for departure.
Cameron took office in 2010 as leader of a coalition government and in May last year won a second term with a surprise outright majority at a national election. He had been due to serve as prime minister until 2020.
He said he believed he had made "great steps" during his time in office, citing, among other things, his landmark move to legalize gay marriage in Britain.
"I love this country – and I feel honored to have served it … I will do everything I can in future to help this great country succeed," he said before taking his wife's hand, turning away and walking back into Number 10 Downing Street.
Talk has already begun of who could succeed Cameron. One of London's main betting companies, bookmaker Ladbrokes said on Friday that leading Brexit campaigner Boris Johnson is the favorite.
Speaking to reporters on Friday, Johnson, who recently finished his last term as the mayor of London, said nothing would change over the short term following the Brexit vote and that in the future Britain would benefit from the vote to leave.
"We can find our voice in the world again, a voice that is commensurate with the fifth-biggest economy on Earth," he said.
"I believe we now have a glorious opportunity: we can pass our laws and set our taxes entirely according to the needs of the UK economy."
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