Sue Gray’s impartiality “must now be called into question” and an inquiry should be held into her conduct, Jacob Rees-Mogg said this evening (THURSDAY).

The former Leader of the House of Commons spoke out after it emerged Ms Gray had been hired as Labour’s new Chief of Staff.

Speaking on his GB News programme this evening, Mr Rees-Mogg said it was a “deeply troubling” situation and that her Partygate report, and the evidence she’d handed over to police, had effectively been “invalidated”.

He said: “She should now be considered an official opposition spokesman. Miss Gray is an effective and diligent administrator. I worked with her when I was in the Cabinet Office, and I was impressed by her. But her impartiality must now be brought into question.

“The neutrality of the civil service is a fundamental part of our constitution, vital for a functioning and trusted democracy.

“It is hard not to feel that she has been rewarded and offered a plum job for effectively destroying a Prime Minister and creating a coup. This blows apart the idea of Civil Service impartiality. This appointment stinks.

“Her report brought down the First Minister of the crown, who had a majority of 80 from the electorate. This appointment invalidates her Partygate Report and shows that there was a socialist cabal of Boris haters, who were delighted to remove him.

“The former PM accepted her two reports on the strict understanding that she was impartial and that now looks wrong.

“Instead, there should be an investigation into her and into her appointment. We should have an inquiry into what she has done in her contact with Labour while she’s been a civil servant, particularly those with the office of the Leader of the Opposition.

“Her report is discredited along with the testimony that was collated by her. That’s why there must be a proper inquiry.”