Sajid Javid quit as Britain's finance minister on Thursday amid the first government reshuffle since the country left the European Union.
Prime Minister Boris Johnson reportedly told Javid he could keep his job as Chancellor the Exchequer on condition that he replace all of his special advisers and that Javid refused.
Rishi Sunak was appointed in Javid's place.The 39-year-old is one of the youngest ever to hold the post and was only entered parliament four years ago. His father-in-law is the founder of tech consultancy giant, Infosys.
Foreign secretary Dominic Raab, de-facto deputy prime minister Michael Gove, home secretary Priti Patel, and justice minister Robert Buckland will keep their current positions.
Johnson sacked a number of ministers
Julian Smith, the Secretary of State for Northern Ireland, was one of the first ministers to be sacked — a surprise move that comes weeks after he brokered a deal to bring the province's government back after years of deadlock.
"Serving the people of Northern Ireland has been the greatest privilege," he tweeted.
Ireland's foreign minister tweeted that Smith had been "effective" at a time of "real challenge & risk".
"Without your leadership, I don’t believe NI would have a Govt today," Simon Coveney added.
One Northern Irish MP tweeted: "Sacking the most successful SoS in a decade shows Johnson's dangerous indifference to us."
Taoiseach Leo Varadkar called Smith "one of Britain’s finest politicians".
Attorney General Geoffrey Cox, also sacked, said that as he returns to the backbenches, he will continue to support the prime minister. Cox had been scheduled to give questions in the House of Commons but was sacked.
Business secretary Andrea Leadsom lost her post as business secretary and said it was a "real privilege to serve in Government for the last six years".
She will be replaced by Alok Sharma. Sharma had previously been international development secretary. He was first elected to parliament in 2010.
Multiple ministers leave government
Universities and science minister Chris Skidmore said he would be spending more time with his family due to a "promotion in the reshuffle". It was not immediately clear if he had been sacked or not.
"Got a promotion in the #reshuffle to be a better Dad with more time to spend with this gorgeous little one," he tweeted.
Transport minister Nusrat Ghani said it had been a huge privilege to serve her role, though it is unclear if she was sacked or not.
"What the Prime Minister giveth, the Prime Minister taketh away: just over six months ago, I was delighted to be invited by the Prime Minister to return to government after three years on the backbenches. This morning he told me that I need to make way for someone new," former environment secretary Theresa Villiers wrote after being sacked.
Some ministers are expected to return to cabinet in new roles - Johnson announced for instance that he would assign a new minister to manage the high-speed rail project he greenlit on Monday.