Former special adviser to Boris Johnson, Dominic Cummings, has accused the Prime Minister of calling himself "the f***ing Fuhrer" repeatedly throughout 2020.
The 50-year-old tweeted in the wake of the release of the Sue Gray report, which Mr Johnson was addressing in the Commons at the time of the post.
The Vote Leave campaign director left Downing Street under a cloud, after being sacked by the PM in November 2020.
++ SUE GRAY REPORT: FOR A FULL RUNDOWN OF WHAT WE KNOW SO FAR, CLICK HERE ++
Prime Minister Boris Johnson's senior aide Dominic Cummings leaves 10 Downing Street.
Aaron Chown
Prime Minister Boris Johnson speaks during a press conference in Downing Street, London, following the publication of Sue Gray's report into Downing Street parties.
Leon Neal
After leaving the inner sanctum of Government, Mr Cummings made claims about Covid rule-breaking in Number 10.
As recently as Monday, the adviser best-known for his own Covid scandal claimed pictures would emerge showing the Prime Minister lied to police about the Partygate scandal.
ITV later released images of Mr Johnson raising a glass at an event in Downing Street.
While MPs questioned Mr Johnson in Westminster this afternoon, Mr Cummings tweeted: "He doesn't think he did anything wrong, as he said repeatedly in 2020 'Everyone better remember I'm the f****** Fuhrer around here' #RegimeChange"
He also doubled down on an earlier social media post by retweeting a meme displaying the text: "Move along, nothing to see here."
The tweet which accompanied the meme said: [laughing face emoji] "so Sue Gray inquiry into ABBA party stopped 'cos police starting', cops don't investigate, SG says 'disproportionate' to investigate now, 0 of those who saw/heard party interviewed [laughing face emoji] #HowBadCoverupsWork#CrimeWeek"
Mr Johnson was met with the traditional table banging, upon arriving to address the backbench Tory MPs of the 1922 Committee.
However back bencher Julian Sturdy has called for the PM's head, and former minister Tobias Ellwood restated his opposition to the Prime Minister saying Sue Gray's report is "damning" and demonstrates "the absence of leadership, focus and discipline in No 10 – the one place where you expect to find those attributes in abundance.
"I’ve made my point and my position very clear to the Prime Minister: he does not have my support", he told MPs.
