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Disturbing new footage shows an anti-lockdown mob chanting "murderer" outside the home of Chris Whitty just a day before he was grabbed by two men in a park.

Members of the crowd shouted through a megaphone and others swigged beer as they stormed the quiet residential street during a march through London on Saturday.

England's chief medical officer – who has been praised for his sensible approach to the pandemic – was branded a "traitor" and a "murderer" by some of the protesters.

The demonstration came a day before footage emerged of the epidemiologist being manhandled and put in a headlock by two men in St James' Park in London.

Prof Whitty was captured looking scared as he was accosted by the pair who filmed the incident for social media on Sunday.

Protesters were filmed heckling and hurling insults outside the top medic's home
(Image: Internet Unknown)

Police are investigating the clip in which the two men can be heard saying: "Oi oi" and "one photo please" as they stick their tongues out at the camera.

In the disturbing clip Prof Whitty eventually manages to break free from after a struggle that turns him red in the face – only to be grabbed a second time.

A voice in the background can be heard saying "leave the gentleman alone" before the video ends.

Boris Johnson slammed the men as "despicable thugs" and Home Secretary Priti Patel said she was "horrified" by the treatment of the top medic.

The Prime Minister said: "I condemn the behaviour of these thugs. Our hard-working public servants should not have to face this kind of intimidation on our streets and we will not tolerate it."

Patel said: "I'm horrified by what has happened to Chris and the police are actually involved as well and we're also speaking to Chris to look at what we can do to support him it's just, it's just appalling."

(Image: PA)

MPs and ministers joined in condemning the footage with new Health Secretary Sajid Javid branding it "appalling"

Vaccines minister Nadhim Zahawi the men should be charged for their "disgusting" behaviour.

The Met Police last night confirmed it was aware of the footage and had launched a probe into the incident.

A spokesperson said: "Officers spoke to all those involved at the time and their details were taken. We are in contact with the victim and the circumstances continue to be investigated."

The force added that it had warned two men "robustly" at the scene and said that Prof Whitty had not wanted to make allegations at the time of the incident.

The upsetting clip shows Prof Whitty struggling to break free
(Image: PA)

The epidemiologist will now be given greater protections after suffering three incidents of harassment this year, The Times reported today.

The professor will be given a car, to put him on par with mid-ranking cabinet ministers, it is understood.

Earlier this month, he was confronted in a street in Oxford by a male Covid skeptic accusing him of lying to the public about the virus.

Chris Whitty played down the February incident in a Downing Street briefing later
(Image: PA)

And in February, another man accosted him in Westminster in an incident that was recorded on a mobile phone.

The top medic downplayed the ordeal in a Downing Street press conference shortly afterwards, telling viewers: "In terms of being harangued … the odd young lad showing off occasionally happens.

"I didn’t think anything of it, frankly. I was very surprised it was picked up by the media at all, as anything of any importance."