Protests like those seen in London at the weekend could become "a weekly headache" for authorities, a politics expert has told Behind the Story.
London was awash with UK flags on Saturday as up to 150,000 people were estimated by police to have gathered for a 'Unite the Kingdom' event.
The event, dubbed a "freedom of speech" festival and led by far-right activist Tommy Robinson, saw police officers assaulted as they clashed with protesters.
Making a surprise appearance via videolink, X owner Elon Musk claimed there is a "rapidly increasing erosion of Britain with massive uncontrolled migration".
There were also counter protests by anti-racism campaigners.
Read more: Police assaulted as tens of thousands gather for London rally
Professor of Politics at the University of Liverpool Jonathan Tonge said the scale of the protest surprised "everyone".
"It's been very difficult for the right-wing in the UK to get big numbers on the streets historically," he said.
"This was huge, this was a six-figure turnout.
"I don’t think the police anticipated that many, I don’t think the organisers anticipated that many."
Prof Tonge said he believes such protests will continue.
"You had a big counter-demonstration as well – that’s not going to the end of the story, those demonstrations will carry on.
"It’s going to be almost a weekly headache, I suspect, for the Metropolitan Police from here on."

Prof Tonge said the street protests show "a real problem".
"People are still taking to the streets, they don't necessarily even see a political party like Reform as necessarily providing a solution – otherwise why would you take to the streets?"
Professor Tonge discussed the defection of the Tory MP Danny Kruger to the Reform Party today. In his speech announcing his defection, Mr Kruger maintained the Conservative Party is over.
David, Katie and Fran also discuss the opening of the trial of Soldier F, who is charged with murdering two men on Bloody Sunday in Co Derry in 1972.
Soldier F is also accused of five counts of attempted murder. He denies the charges.
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