British Prime Minister Keir Starmer has said he will chair a meeting of his government's emergency committee meeting this afternoon, saying it was "important that we don't let up" despite a quieter night of protests last night.
Following a visit to a mosque in Solihull, Mr Starmer said: "Now it's important that we don't let up here and that's why later on today I will have another Cobra meeting with law enforcement, with senior police officers, to make sure that we reflect on last night but also plan for the coming days."
He also said that "the most important lesson" is the one which people sentenced to prison will learn, after violent disorder over recent days.
"The most important lesson is for those involving themselves in disorder, because what we've seen is that those who've been arrested - now numbered in their hundreds, many have been charged, some already in court, and now a number of individuals sentenced to terms of imprisonment, that is a very important message to those involved in disorder.
"And I say it again, anybody involving themselves in disorder, whatever they claim as their motive, will feel the full force of the law.
"It's important I repeat that because we need to make sure that in the coming days, we can give the necessary reassurance to our communities, many of whom - I've been talking to some this morning - are very anxious about the situation."
Thousands of anti-racism protesters took to the streets in several English cities last night to oppose days of far-right violence that have had police on high alert.
Nightly riots - during which mosques and migrant-related facilities were attacked - erupted in a number of towns and cities in England and Northern Ireland fuelled by a wave of misinformation surrounding the murder of three children in Southport on 29 July.
However, yesterday evening, anti-racism and anti-fascist protesters were out in greater numbers, holding rallies in cities up and down England including London, Birmingham, Bristol, Liverpool and Newcastle.
"Whose streets? Our streets!" chanted thousands of demonstrators in Walthamstow, northeast London, where some held banners saying "Stop the far right".
"I live in the borough and we don't want these people on our streets ... they don't represent us," Sara Tresilian, 58, said.
"You have to turn out (and) give that message ... I think it's important that you show up for your friends and neighbours."
Another of those in attendance, Mahmood Faez, said: "It fills our hearts. Regardless of race, religion, sexuality, this sends a strong message to racists that they are not wanted and they are not needed here."
Deputy Assistant Commissioner of London's Metropolitan Police Andy Valentine thanked "communities for coming together across the capital and for showing community spirit this evening".
In Sheffield, activists chanted "Say it loud, say it clear, refugees are welcome here," as riot police looked on.
In Birmingham, hundreds of anti-racism protesters gathered outside a migrant support centre, while in Brighton, around 2,000 people took part in a peaceful demonstration, according to police.
However, there was some tension in the southern town of Aldershot where police had to intervene between anti-racism activists and a group of people shouting "Stop the boats" - a reference to migrants who reach Britain by crossing the English Channel.
Avon and Somerset Police said officers made an arrest after a brick was thrown at one of its vehicle during a "largely peaceful" protest in Bristol.
The government had put 6,000 specialist police on standby to deal with the approximately 100 demonstrations by far-right activists and counter-protesters that were advertised.
In a social media post, Home Secretary Yvette Cooper thanked "all the police officers working tonight to protect & support local communities".
Courts have started to issue jail terms for offenders tied to the unrest as authorities seek to head off new troubles.
The disorder, the UK's worst since the 2011 London riots, has resulted in almost 430 arrests and at least 120 charged, leading several countries to issue travel warnings for the UK.
The violence broke out after three girls - aged nine, seven and six - were killed and five children critically injured during a knife attack at a Taylor Swift-themed dance class in Southport ten days ago.
False rumours initially spread on social media saying the attacker was a Muslim asylum seeker.
The suspect was later identified as 17-year-old Axel Rudakubana, born in Wales. UK media reported that his parents are from Rwanda.
The rioting that followed has seen demonstrators throw bricks and flares at police officers, burn cars, and attack mosques and at least two hotels that have been used for asylum seekers.
Scores of accused, including teenagers, have appeared before judges.
Yesterday, a man was jailed for three years after he pleaded guilty to violent disorder and assaulting a police officer in Southport.
Two other men received sentences of 20 months and 30 months for participating in violence in Liverpool on Saturday.
"The three men sentenced ... are the tip of the iceberg, and just the start of what will be a very painful process for many who foolishly chose to involve themselves in violent unrest," said prosecutor Jonathan Egan.
Police have blamed the disorder on figures associated with the now-defunct English Defence League (EDL), a far-right Islamophobic organisation founded 15 years ago whose supporters have been linked to football hooliganism.
EDL founder Tommy Robinson has been accused by authorities of stoking tensions, and police in Cyprus, where he is reported to be on holiday, said they were ready to assist UK officers if needed.
However, he later wrote on the X social media platform: "Lucky I'm not in Cyprus then".
The rallies have been advertised on far-right social media channels under the banner "enough is enough".
UK politicians have accused social media sites of fuelling the violence.
Owner of X Elon Musk, in particular, has angered the government with a series of provocative tweets, including that a British "civil war is inevitable".
Additional reporting PA
