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

The met announced it is to deploy some 1,600 officers as Robinson supporters and opposing anti-racism demonstrators, who are hosting a 'March Against Fascism' stage rival rallies.

Some protesters displayed images of Charlie Kirk, the US conservative activist and Trump ally who was killed in Utah this week.