PRIME Minister Boris Johnson has reportedly been interviewed as part of the investigation into Partygate allegations as claims of another lockdown breach in No 10 surfaced.

The Prime Minister is said to have “shared what he knows” with senior civil servant Sue Gray about multiple alleged parties in Downing Street during the Covid-19 pandemic, as she prepares to publish her report into claims of coronavirus rule flouting as soon as this week.

It comes as more allegations have been published in the national media, claiming Mr Johnson attended a leaving do before Christmas 2020 during which he gave a speech to mark the departure of his defence adviser Captain Steve Higham.

No 10 did not respond to request for comment and the Ministry of Defence declined.

The leaving do claim is the latest in a long line of allegations about rule breaking in Downing Street, with Ms Gray looking into a litany of possible events, including a “bring your own booze” garden party during the first coronavirus lockdown that Mr Johnson has admitted he attended – claiming he thought it was a “work event”.

Mr Johnson’s sister, Rachel Johnson, told radio listeners on Sunday that the Prime Minister was “completely compliant” with Covid rules whenever they met under restrictions.

Referring to the BYOB event, in May 2020, she said: “To my mind, if he did go out into the garden, and he has told us he did, for him that would have been work.”

In a bid to survive the partygate storm, reports have suggested Mr Johnson could overhaul his top team, with the likes of his principal private secretary Martin Reynolds, who sent an email inviting staff to enjoy the good weather in the No 10 garden in May 2020, being shown the door as part of a move said to have been dubbed “Operation: Save Big Dog”.

It's been reported a bid to save Mr Johnson’s premiership would include an announcement putting the military in charge of preventing small boats from crossing the Channel, as the Prime Minister looks to push “populist” policies.

A change being considered could, according to The Times, include processing asylum seekers in Ghana and Rwanda, although the Home Office would not be drawn on such suggestions.