This is the moment police scrambled to drag a man to safety after he appeared to be left unconscious on the floor during Tommy Robinson's 'Unite the Kingdom' march.

The incident came as an estimated 110,000 - 150,000 protesters marched through central London on Saturday in what is believed to be the largest right-wing demonstration in British history.

Met Police chiefs blasted anti-migrant protesters for displaying a 'wholly unacceptable' level of violence - with at least 25 people arrested and 26 police officers injured, including four who were seriously hurt.

The force said it faced 'significant aggression' from protesters as officers attempted to police the event, with many assaulted and peppered with missiles.

In one video, at least seven officers can be seen trying to rescue a man left splayed out on the floor as violence broke out at the end of Whitehall, near Trafalgar Square.