The government’s chief whip has warned Conservative MPs not to comment on a probe into whether Boris Johnson misled MPs over Partygate.
A spokesperson for the committee said it had not “prejudged” any aspect of its inquiry, and the parliamentary officials advising it were politically impartial.
The cross-party committee has a Tory majority, but has found itself under fire from Conservative allies of the prime minister in recent days.
On Sunday, Johnson loyalist and Culture Secretary Nadine Dorries said the “Machiavellian” inquiry was “the means to a by-election” and called on Tory MPs to “have no part in it”. “If this witch hunt continues, it will be the most egregious abuse of power witnessed in Westminster,” she added.
Environment Minister Lord Goldsmith, whom Mr Johnson made a peer in December 2019, said the inquiry was “clearly rigged” and an “obscene abuse of power”.
Backbench Tory MP Michael Fabricant also accused the committee of wanting to “get rid of Boris Johnson” and “changing the rules”.
But in an email to Tory MPs on Thursday, Chief Whip Chris Heaton-Harris said he would like to “remind” them that the committee was set up by a vote in the Commons, which also has to sign off any sanction recommended by the committee.
“May I urge caution against any further comments in the media about the Privileges Committee and especially its Clerk and Members,” wrote Mr Heaton-Harris, who is in charge of party discipline. Invariably these comments will be misinterpreted by those who do not wish to help us."
On Tuesday, one of the Tory MPs on the committee, Sir Bernard Jenkin, said the committee had a “duty” to carry out the inquiry and accused Ms Dorries of waging a “terrorist campaign to try and discredit the committee”.
Dorries has become a particularly NPOW, emulating her beloved PM in his use of lies and insinuation to hide the truth.