The Labour leader was bundled into a police car for his safety after being confronted by a mob last night.
Boris Johnson wrongly claimed the former lawyer had failed to prosecute Jimmy Savile in his previous job.
He's facing calls to apologise.
Feltham Labour MP Seema Malhotra says “Words matter. When Boris Johnson repeats nonsense from conspiracy theorists he emboldens them. He must apologise for his false claims.”