image source, EPA image caption Gavin Williamson a been criticized for his handling of the pandemic
Gavin Williamson is absent as Education Secretary as the PM begins a reshuffle of his top team.
Justice Secretary Robert Buckland hasHe also lost his job, he confirmed in a twitter message.
Boris Johnson is sacking ministers from his office in the House of Commons and is expected to start announcing their replacement later.
Foreign Secretary Dominic Raab is among those reportedly displaced or sacked.
Mr. Williamson has come under heavy criticism for handling disruption to schools and exams during the pandemic.
Mr. Williamson confirmed he left the post in a tweet, stating: "It 'sa privilege to serve as Secretary of Education since 2019.
" Despite the challenges of the global pandemic, I am particularly proud of the transformational reforms I have carried out in education Post 16: in educational establishmentshigher education, our skills program, apprenticeships and more. "
Mr Buckland, the UK's top lawyer, also confirmed his departure in a twitter message.
He said: "It has been an honor to serve in government for the past 7 years, and as Lord Chancellor for the past 2.
" I am deeply proud of all I've accomplished. Let's move on to the next adventure. "
Downing Street earlier confirmed that the reshuffle was underway, saying the PM wanted to " put in place a strong and united team to better rebuild after the pandemic ".
" The government must also redouble its efforts to meet the priorities of the people, "No 10 added.
"PM will appoint ministers this afternoon with a focus on unity and leveling the whole country.
Confirmation of the reshuffle then intervenedthat Mr Johnson was rising in the Commons to answer the Prime Minister's questions.
image caption The government bench could be differentte by the end of Wednesday
He remained in the Commons after PMQs, where he can sack ministers in his private office, away from the Downing Street cameras.
M. Johnson has remained largely loyal to the cabinet team he appointed after winning the December 2019 general election.
The only major change came in February 2020, when Rishi Sunak became chancellor following the resignation of Sajid Javid.
Mr. Javid returned to government in July of this year as Health Secretary, following the resignation of Matt Hancock.
Speculation has been mounting for weeks that the PM is considering a more widespread reshuffle of his team ministry .
Dominic Raab, whobeen criticized for dealing with the aftermath of the fall of Afghanistan, has also been at the center of speculation about its future.
Home Secretary Priti Patel has also faced headlines negatives on allegedly violates ministerial rules , a freeze on police salaries and allegations of intimidation.
But Ms Patel held a prominent position on the government front during the Prime Minister's Questions, sitting next to the Chancellor Rishi Sunak, with Commons Leader Jacob Rees-Mogg to the right of the PM.
Other Cabinet heavy hitters could not be seen in the chamber, including the Duchy Chancellor of Lancaster, Michael Gove, who was approached for promotion to a higher role.