Police are searching for two men after a medic was dragged to the ground and kicked in the head during a demonstration against Tommy Robinson’s imprisonment.

The Metropolitan Police said demonstrators had attempted to breach a cordon separating them from counter-protesters on Saturday.

“During this incident a police medic was pulled to the ground and kicked in the head by a male,” a spokesperson added.

Footage of the attack was shared on social media and caught on the officers’ body-worn camera.

Superintendent Roy Smith said: “Attacks on police officers, as with an attack on any emergency service worker, are attacks on the basic fabric of a civilised society.

“The sole purpose of deploying police medics to an event is to ensure the safety of those attending and provide care to those who require it.”

Tommy Robinson supporters standoff with police Show all 11 1 /11 Tommy Robinson supporters standoff with police Tommy Robinson supporters standoff with police Tommy Robinson (Stephen Yaxley-Lennon) supporters in Oxford Street protesting against his prison sentence after he was jailed for nine months for contempt of court PA Tommy Robinson supporters standoff with police Police chase supporters in order to keep them apart from counter-protesters AFP/Getty Images Tommy Robinson supporters standoff with police Police confront supporters AFP/Getty Images Tommy Robinson supporters standoff with police TOPSHOT - Police grapple with supporters of Stephen Yaxley-Lennon, AKA Tommy Robinson, founder and former leader of the anti-Islam English Defence League (EDL), in central London on August 3, 2019, as they keep the supporters apart from counter-protesters from 'Stop Tommy Robinson' and 'Stand up to Racism'. - British far-right figurehead Tommy Robinson was jailed for contempt of court on July 11, having live-streamed a confrontation with defendants in a criminal trial that was subject to reporting restrictions. (Photo by Tolga AKMEN / AFP)TOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty Images Tommy Robinson supporters standoff with police Police grapple with supporters of Stephen Yaxley-Lennon, AKA Tommy Robinson, founder and former leader of the anti-Islam English Defence League (EDL), in central London on August 3, 2019, as they keep the supporters apart from counter-protesters from 'Stop Tommy Robinson' and 'Stand up to Racism'. - British far-right figurehead Tommy Robinson was jailed for contempt of court on July 11, having live-streamed a confrontation with defendants in a criminal trial that was subject to reporting restrictions. (Photo by Tolga AKMEN / AFP)TOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty Images Tommy Robinson supporters standoff with police Tommy Robinson supporters in Oxford Street in London protesting against his prison sentence after he was jailed for nine months for contempt of court over a video he broadcast on Facebook which featured defendants in a criminal trial. PRESS ASSOCIATION Photo. Picture date: Saturday August 3, 2019. Photo credit should read: Steve Parsons/PA Wire Steve Parsons PA Tommy Robinson supporters standoff with police Police grapple with a supporter of Stephen Yaxley-Lennon, AKA Tommy Robinson, founder and former leader of the anti-Islam English Defence League (EDL), in central London on August 3, 2019, as they keep the supporters apart from counter-protesters from 'Stop Tommy Robinson' and 'Stand up to Racism'. - British far-right figurehead Tommy Robinson was jailed for contempt of court on July 11, having live-streamed a confrontation with defendants in a criminal trial that was subject to reporting restrictions. (Photo by Tolga AKMEN / AFP)TOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty Images Tommy Robinson supporters standoff with police A supporter of Stephen Yaxley-Lennon, AKA Tommy Robinson, founder and former leader of the anti-Islam English Defence League (EDL) shouts as police form a cordon between supporters and counter-protesters from 'Stop Tommy Robinson' and 'Stand up to Racism', in central London on August 3, 2019. - British far-right figurehead Tommy Robinson was jailed for contempt of court on July 11, having live-streamed a confrontation with defendants in a criminal trial that was subject to reporting restrictions. (Photo by Tolga AKMEN / AFP)TOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty Images Tommy Robinson supporters standoff with police Police watch supporters of Stephen Yaxley-Lennon, AKA Tommy Robinson, founder and former leader of the anti-Islam English Defence League (EDL), in central London on August 3, 2019, as they keep the supporters apart from counter-protesters from 'Stop Tommy Robinson' and 'Stand up to Racism'. - British far-right figurehead Tommy Robinson was jailed for contempt of court on July 11, having live-streamed a confrontation with defendants in a criminal trial that was subject to reporting restrictions. (Photo by Tolga AKMEN / AFP)TOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty Images Tommy Robinson supporters standoff with police Tommy Robinson supporters in Oxford Street in London protesting against his prison sentence after he was jailed for nine months for contempt of court over a video he broadcast on Facebook which featured defendants in a criminal trial. PRESS ASSOCIATION Photo. Picture date: Saturday August 3, 2019. Photo credit should read: Steve Parsons/PA Wire Steve Parsons PA Tommy Robinson supporters standoff with police Tommy Robinson supporters in Oxford Street in London protesting against his prison sentence after he was jailed for nine months for contempt of court over a video he broadcast on Facebook which featured defendants in a criminal trial. PRESS ASSOCIATION Photo. Picture date: Saturday August 3, 2019. Photo credit should read: Steve Parsons/PA Wire Steve Parsons PA

Footage from the protest showed officers struggling to maintain order as Tommy Robinson supporters crowded around a police van in central London.

An officer wearing a vest marked “police medic” in large letters was surrounded by several men before disappearing from view as other officers ran in.

The crowd were chanting “shame on you” at police and waving flags, while many were wearing merchandise sold by Robinson’s website.

Three men and a woman were previously arrested over the incident, and 21 others were detained for offences including drunk and disorderly behaviour during a protest that started in Oxford Circus.

A separate counter-demonstration was held by anti-racist and anti-fascist activists in a nearby area of Regent Street.

It came after Robinson, whose real name is Stephen Yaxley-Lennon, was jailed for contempt of court for breaking a reporting restriction on linked grooming trials in Leeds.

His supporters characterised the case as an “establishment” crackdown on freedom of speech, but a High Court ruling revealed that Robinson’s Facebook live had sparked an application to dismiss the jury in the second of three linked trials, and an attempt to have a rapist’s conviction overturned.

Police would like to speak to this man in relation to a 'Free Tommy Robinson' protest in London on 3 August 2019 (Metropolitan Police)

Judges threw out claims that the proceedings violated freedom of expression, finding that Robinson had “lied about a number of matters, and sought to portray himself as the victim of unfairness and oppression”.

He was jailed for 19 weeks and will serve half, after judges reduced the term because of his previous imprisonment for contempt of court last year.

Robinson was freed after his first sentence was overturned because of procedural failings, but the attorney general later ordered fresh proceedings.

His initial imprisonment in May 2018 sparked a series of “Free Tommy” protests, which also saw violence break out as supporters targeted police officers.

Supt Smith said police would not stop investigating Saturday’s incident “until those responsible are identified and brought to justice”.

Police would like to speak to this man in relation to a 'Free Tommy Robinson' protest in London on 3 August 2019 (Metropolitan Police)

“I would urge anyone who has information relating to this sickening and cowardly attack to come forward, which you can do in complete confidence,” he added.

“I appeal to those involved, those who were with them on the day, or those who know who they are to do the right thing and come forward.”