Theresa May will be officially confirmed as the next Prime Minister and be moved into 10 Downing Street 'by Wednesday evening', David Cameron has said.
It comes after the Conservative leadership race was cut short when Andrea Leadsom dropped out, meaning Ms May was the only candidate left before the nine-week campaign had even begun.
The new Prime Minister said she was "honoured and humbled" to be taking the top job, and pledged to make a success of the vote to leave the European Union.
David Cameron, who leads his final cabinet meeting today, will give his formal resignation to the Queen on Wednesday before Ms May is sworn in. She will then have to appoint her own cabinet.
Mr Cameron described the new Prime Minister as "strong" and "competent", adding that she was "more than able to provide the leadership" needed as the UK prepares the leave the EU and in years to come.
But the honeymoon period is likely to be short lived, with the Lib Dems, Greens and some Labour MPs calling for a snap election, as Theresa May had done when Gordon Brown took over from Tony Blair.