Conservative MP Tobias Ellwood has told Sky News he will be submitting a letter of no confidence in Boris Johnson today.
The senior Tory, who is chair of the Defence Select Committee, revealed in an interview with Kay Burley that he would be making the move.
He said it is “time to resolve this” as the Conservative Party is “slipping into a very ugly place”.
It comes as the prime minister faces continued pressure over the partygate revelations, with the Metropolitan Police investigating 12 gatherings during COVID-19 restrictions for potential breaches of regulations.