Sir Michael Fallon resigned last night as Defence Secretary in a shock announcement.
Besides Gavin Williamson, Prime Minister Theresa May has appointed Julian Smith as the new Chief Whip and Esther McVey has been appointed Deputy Chief Whip.
Number 10 confirmed the news with a statement which said: “The Queen has been pleased to approve the appointment of Rt Hon Gavin Williamson as Secretary of State for Defence.”
When he announced his resignation, Sir Michael said his conduct had “fallen short” of the required standards of a government minister.
MPs Tobias Ellwood and Penny Mordant were also tipped to take on the top role.
Mr Williamson’s appointment has been a shock to many in Westminster as he was not considered to be a frontrunner for the job.
Mr Williamson was David Cameron’s parliamentary private secretary and was awarded a CBE for his work after the former PM resigned.
Sir Michael’s resignation came after it emerged that he had repeatedly put his hand on journalist Julia Hartley Brewer’s knee at a dinner in 2002.
However, the journalist believes other allegations from the former minister are expected to emerge.
She said: “All the people I’ve spoken to in and around the Conservative party and Downing Street seem to make clear that they expect other allegations to surface.
“My understanding is that the Prime Minister felt that it was time for him to go.”
The Scottish Tory leader Ruth Davidson has said the “tone of politics had changed”.
In his resignation letter, Sir Michael said: “I accept that in the past I have fallen below the high standards that we require of the Armed Forces that I have the honour to represent.”
Mrs May paid tribute to Sir Michael’s “long and impressive ministerial career”.
It is likely that Sir Michael is not the last resignation and there are more to come.
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