Labour leader Keir Starmer accused Boris Johnson of “parroting the conspiracy theories of violent fascists” with his despatch box comments about Jimmy Savile.
Appearing in parliament on Monday to apologise for the contents of Sue Gray’s initial report, Johnson said Starmer “spent more time prosecuting journalists and failing to prosecute Jimmy Savile” as director of public prosecutions.
The claim is false, with fact-checking websites saying that while Starmer was head of the CPS at the time, he was not personally involved in the decision not to prosecute Savile.
Alongside the prime minister, fans of the theory include followers of the QAnon conspiracy.
At the start of Prime Minister’s Questions, Starmer used his question to attack Johnson for his use of the claim.
He said: “Theirs is the party of Winston Churchill. Our parties stood together as we defeated fascism.