MP for Newbury Laura Farris has become the latest Conservative politician to call on Boris Johnson to resign.

More than 30 MPs have resigned from government posts since Tuesday and counting in an effort to push the Prime Minister out of No 10.

In a statement on Facebook this evening, Farris said: “Every time I walk into Parliament, I feel an extraordinary sense of privilege and the responsibility that comes with representing my home in Parliament.

“I have always sought to represent my constituents with the seriousness, energy and commitment that they deserve. I do not believe this to be possible under the current leadership.”

Another Berkshire MP, James Sunderland, resigned as Parliamentary Private Secretary to the Department for Environment, Food & Rural Affairs today.

In a statement, Sunderland said: “I have today resigned as Parliamentary Private Secretary to the Department for Environment, Food & Rural Affairs.

“I would like to thank everyone who has taken the trouble to share their views with me in recent months.

“I continue to serve the people of Bracknell, Crowthorne, Finchampstead, Sandhurst and Wokingham Without to the best of my ability.”

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A delegation of Cabinet ministers are preparing to tell Boris Johnson to leave Downing Street, as he haemorrhaged support across the Tory ranks.

Transport Secretary Grant Shapps, who was key to the Prime Minister’s fight for survival during partygate, is among those who will demand he quits, sources told the PA news agency.

Long-standing ally Brandon Lewis, who believes Mr Johnson’s position is “now untenable”, was understood to be part of the group, as was Welsh Secretary Simon Hart.

Reports even suggested Nadhim Zahawi, who was only appointed Chancellor on Tuesday, will join the group.