PM Keir Starmer condemns "far-right thuggery" on UK streets and says those involved "will regret it"
His comments follow violence in several cities on Saturday and further unrest on Sunday
Earlier, a crowd chanting "get them out" smashed windows at the Holiday Inn Express hotel in Rotherham and started a fire
Police officers with riot shields surrounded the building and tried to push people back - and extinguished the fire
More than 140 people have been arrested in relation to disorder since Saturday night
There are also demonstrations in Bolton, Weymouth, Southport and Middlesbrough, where the crowd broke through a police line
Protests organised by the far-right started across the country after the fatal stabbing of three young girls in Southport on Monday
A number of police officers have been injured while dealing with "serious disorder" in Liverpool, Merseyside Police says.
"This behaviour, which puts the public and our officers in harms way, will not be tolerated. And we will be arresting those responsible," the force says.
Dan Johnson
News correspondent, reporting from Liverpool
It’s felt chaotic at times this afternoon around Liverpool’s waterfront, with the police struggling to keep control.
At lunchtime a few hundred anti-fascist demonstrators gathered across from Liverpool’s Lime Street station at lunchtime, calling for unity and tolerance. They’ve chanted “refugees are welcome here” and “Nazi scum, off our streets”.
They marched down to the Pier Head to confront around 1,000 anti-immigrant protestors. Police in riot gear with dogs have struggled to keep the two sides apart.
I’ve seen smoke canisters, bottles and paint tins thrown by people on the side chanting anti-immigrant slogans, some of them masked.
There have been a couple of arrests here and more police officers have arrived in vans to try to maintain order. A police plane is circling overhead.
Shoppers and visitors to Liverpool’s iconic waterfront are surprised to see the crowds. Many are wondering what any of this has to do with the awful events in Southport on Monday.
Image source, Reuters
Image source, Reuters
Image source, Reuters
Image source, Reuters
Leanne Brown
Reporting from Hull
I'm still here at the protest in Hull. Over the last while, I've seen some protesters attempt to light a fire – but it isn't major.
Earlier, I saw some smash windows at a hotel which has been used to house asylum seekers.
Where I am now, I can see a lot of smashed glass on the ground from bottles being thrown.
Laura Hammond and Giles Taylor
Reporting from Nottingham
The two sides have been facing each other in the centre of Nottingham for the past hour now.
Police have formed a thin line between the groups.
A few bottles have been thrown, and lots of chanting, but no signs of major trouble.
Image source, PA Media
Image source, ReutersA BBC analysis earlier this week of activity on mainstream social media and in smaller public groups showed a clear pattern of influencers driving a message for people to gather for protests, but there is no single organising force at work.
Not everyone attending these protests, or posting about the Southport attacks, supports rioting or has links to far-right groups. The protests appeared to draw in people concerned about violent crime or misled by misinformation.
Merseyside Police have previously identified the English Defence League (EDL) as a key factor. While there are people who describe themselves as EDL supporters, the organisation ceased to exist in any formal sense after its founder Tommy Robinson focused on spreading his message on social media platforms.
But its core ideas - in particular an opposition to illegal immigration, mixed with hate predominantly aimed at Muslims - are very much alive.
To read more on this from BBC Verify, click here.
In Manchester, there have been scuffles between some protesters and police in the city centre.
Police say there have been two arrests so far, one of which was for drunk and disorderly behaviour.
There is also a counter-protest and officers are keeping the two crowds separated.
Image source, Reuters
Image source, Reuters
Image source, Reuters
Image source, EPAPhil McCann
Reporting from Liverpool
The two sides met after the anti-racist demonstration moved down to the pier head where the other demonstration was taking place. There was some pushing and shouting with a few objects thrown.
Police are in riot gear now and there are lots of Tommy Robinson chants. The anti-racist demo is now being moved away by police.
The numbers on both sides combined are in the high hundreds, possibly 1,000.
As we've been reporting, protests and counter-protests are happening in several UK cities today, including Manchester, Belfast, Liverpool, Portsmouth, Leeds, and Hull.
Groups shouting slogans such as "stop the boats" and anti-immigration messages have, in many cases, been met with anti-racist and anti-fascist demonstrations.
In most cities, we haven't seen any major trouble. Police have kept the groups separate, and some places the demonstrations have dispersed.
But we have seen isolated incidents of protesters throwing objects, including bottles.
In Hull, protesters have smashed a window at a hotel that has been used to house asylum seekers. In Manchester, we've seen scuffles with police, and at least one arrest. And in Belfast, protesters outside a mosque have thrown objects at members of the media, and earlier they smashes windows in a cafe.
Stay with us for more updates.
Merseyside Police have given its officers greater stop and search powers across Liverpool city centre and two other neighbourhoods in order to deter disorder.
The powers – known as a section 60 order – allow officers to search anyone in a given area without needing reasonable grounds to do so if they believe serious violence is possible.
The order, in place until midnight, also covers Toxteth and Kensington.
Superintendent Dawn McNally said: “People and business owners in the Liverpool area will see a highly visible police presence today.
"I hope their continued presence is reassuring, and I would ask anyone with concerns to speak to our officers."
Leanne Brown
Reporting from Hull
In Hull, protesters gathered outside a hotel which has been used to house asylum seekers.
We've seen the crowd throwing concrete bricks and smashing windows with glass bottles, shouting "get them out".
Alison Blackstone, Lee Bottomley & Trystan Jones
Reporting from Leeds and Stoke-on-Trent
It's a sunny day here in Leeds city centre, with crowds gathering for two competing marches outside the impressive 19th century town hall and the nearby art gallery.
A sea of police officers outside the art gallery are working as a barrier to keep apart two very separate sets of protestors. So far, they are doing that very successfully.
At the town hall, there's a demonstration organised by far-right groups billed as "against terrorism". Some people are carrying St George's flags.
A counter-protest by Stand Up to Racism is convening close by for a march around the city centre, asking its supporters to "stop the far-right in Leeds". They are waving banners proclaiming: "Say it loud, say it clear, refugees are welcome here."
About 20 police officers are keeping the two groups about 20 metres apart.
Yesterday evening, the city centre was full of people enjoying the warm evening – today it’s a very different atmosphere.
Image source, Alison Blackstone / BBC
Image source, Alison Blackstone / BBCIn Stoke-on-Trent, about 400 people are protesting in the city centre, with others at a nearby counter-protest.
Police are standing between the rival groups and police dogs have recently arrived.
So far it has been largely peaceful, with plenty of police on the streets, but there is tension in the air.
Police have urged local people to stay indoors, but if they have to go out, they should not go alone.
Image source, Lee Bottomley / BBCPolice in Hanley, Stoke-on-Trent between rival protest groups
Image source, Lee Bottomley / BBCProtestors marching towards the city centre in Hanley, Stoke-on-Trent
Image source, Getty ImagesAs we've been reporting, hundreds of people took to the streets in Sunderland last night, some of them turning violent. It is the latest incident of unrest across England following Monday's knife attack in Southport.
Here's a recap of what happened last night and the reaction this morning:
We're moving our focus back to Sunderland for a moment. A resident who joined hundreds of volunteers to clean up the streets this morning says he's "ashamed and "embarrassed" by the unrest overnight.
Brett Redmayne, 43, was one of hundreds of volunteers who turned up to help council staff to clean up the streets.
"The atmosphere around the city with the hundreds that showed up was one of support and unity," he says.
"These people who rioted don't speak for Sunderland and we are ashamed and embarrassed."
Redmayne says the council along with local volunteers "cleaned everything off very fast" and he praised the council for their speedy response.
Mat Trewern and Leanne Brown
Reporting from Manchester and Hull
Police in Manchester have formed a divide between two groups - first, protesters chanting “stop the boats” and “save our kids”, and second, anti-fascist demonstrators - at Piccadilly Gardens in the city centre.
A few young people broke through but there was no trouble, and the groups appear to be dispersing.
Image source, Getty Images
Image source, ReutersIn Hull city centre there are hundreds of people. There are two sides separated by police. One side has Union Jack flags and is shouting: "You're not British any more."
The other side is replying with: "Say it loud, say it clear, refugees are welcome here."
Plastic bottles and food has been thrown, but the situation remains under control.
Image source, Leanne Brown/BBCProtesters seen in Hull
As we've just reported, we have seen peaceful demonstrations in a few places this morning, with more protests planned later.
In Manchester, a dispersal notice has been put in place until 19:00 BST across the city centre. This gives officers extra powers to deal with anti-social behaviour.
“These powers have been authorised to make sure we can continue to provide and facilitate the right to any peaceful protests that have been organised," Chief Inspector Natasha Evans says.
South Wales Police has also put a dispersal order in place around the area of Mermaid Quay and the Welsh Parliament in Cardiff Bay.
The order will help "prevent escalating situations and ensure a safe environment for everyone", the force said in a Facebook post.
A dispersal order is also in effect in Blackburn.
And in Belfast, police are mounting a significant security operation in the city centre. A small group of anti-Islamic protesters have gathered at the front of City Hall, chanting "Islam out". A larger group of anti-racist protesters are across the road.
Moving away from Sunderland - we are seeing protests this morning in both Manchester and Portsmouth, and we know that demonstrations are planned elsewhere, too.
In Manchester, around 200 protesters walked through through the city centre, with people heard saying "save our streets".
Earlier, some protesters were seen in a shouting match with counter-protesters, but there were no signs of trouble.
At about 11:40 BST, two police lines, including horses, were keeping two sets of protesters apart on Mosley Street.
In Portsmouth, a group of between 200 and 300 protesters, some wearing face coverings, gathered in Guildhall Square. Some carried barriers saying "save our children" and "stop the boats". One man carried a flag with the message "stop mass immigration".
Again, there were no signs of trouble, and they began to disperse at 11:00 BST.
Demonstrators gather in Portsmouth
North East Mayor Kim McGuinness says she was horrified by what she saw carried out by a "violent series of thugs".
Families out enjoying a sunny day yesterday were pushed into their homes by "these people who wanted to riot", she adds.
"They will not define us," says the mayor.
Grieving families in Southport will not take comfort in the scenes they saw in Sunderland, she says.
Northumbria Police and Crime Commissioner Susan Dungworth is next and says the violence, looting and vandalism is "criminal behaviour".
It is also not mourning the victims of Southport, she says, and the families of those victims have not been given a second thought by these "thugs".
For context, the unrest in Sunderland was the latest to break out in towns and cities across England following the killing of three young girls in Southport on Monday.
The victims have been been used to promote the "extreme agenda of those who want to cause trouble and division in our communities", Dungworth says.
This is not about taking the country back as the protestors claims, Dungworth say.
She adds that extra police officers will be in place this weekend.
She thanks the "hard-working police officers" last night who put themselves in harms way.
Next, we hear from Sunderland City Council's Deputy Leader, councillor Kelly Chequer.
She offers her heartfelt condolences to the people of Southport. She says in Sunderland last night there was "mindless violence and disorder".
She adds many people were not from the city and came to cause chaos.
Hall now says he has a message for those involved in the violence last night.
He says anyone involved can expect "to be dealt with robustly" and that process has already begun.
Ten people have been arrested, he says.
He continues by saying that if you were involved in the violence last night, "expect to be met with the full force of the law".
We will not tolerate the disorder that happened overnight, he says.
He gives a further message to communities that the criminal actions overnight could attempt to drive division but the police are committed to ensuring that does not happen.