Police have been called to a Tesco store in north London following reported scuffles at a Black Friday event.
Reports on social media suggested that fights had broken out as shoppers at a Tesco's Glover Drive store in Edmonton attempted to buy coffee makers and televisions.
Guardian journalist Laurence Topham described it as "mayhem" inside, and police and ambulance cars were seen surrounding the entrance.
A Scotland Yard spokewoman told ITV News: "Police were called at 23.56pm to Tesco in Lea Valley, Edmonton due to large crowds gathering outside."
No arrests were made, she added.
At an Asda branch in north-west London, scuffles broke out as shoppers battled to get their hands on discounted televisions.
The allegations of child sex abuse at public institutions that have emerged so far are just the "tip of the iceberg", Theresa May has warned.
The Home Secretary told the BBC's Andrew Marr Show it was crucial to "get to the truth" of what happened in the 1970s and 1980s.
Metropolitan Police commissioner Bernard Hogan-Howe said there were 40 of his officers "looking into these relatively new claims" about Westminster child abuse.
There have recently been allegations about the possible murder of a young boymade the claims "even more serious".
Protesters who spent the night near Parliament Square remained outside the Supreme Court today, insisting that they planned to stay until Sunday evening.
Around 30 protesters from the Occupy London group slept on land outside the Supreme Court building, which overlooks Parliament Square, after the square itself was fenced off. Around 45 demonstrators were still in the area this afternoon, displaying banners and placards.
Canning Green, a grassy area near the court, has also been closed off by police.
The demonstration remained peaceful this afternoon, and the Metropolitan Police said there had been only one arrest.
There were bizarre scenes early this evening as police and Westminster council officials forcibly removed a sofa from the protesters.
Two removal men who died when balcony railings gave way as they carried a sofa into a home have been named by police.
Polish nationals Tomasz Procko, 22, from Greenford, and Karol Szymanski, 29, from Wembley, were killed yesterday in Knightsbridge, central London.
At least six others, also believed to be removal men, were injured in the incident.
Mr Procko was pronounced dead at the scene. Mr Szymanski was taken to hospital in a critical condition and later died.
Hotel guests have spoken about last night's gas explosion at London's Hyatt Regency Hotel in Portman Square, describing the atmosphere immediately following the blast.
Raymund Reyes, 40, said it was 'chaos' on the street outside the hotel as some guests waited in the cold for an hour and a half waiting to find out what was happening.
Mr Reyes said at first he thought the explosion was a drill but realised it was more serious when he left his room. He said: "The floor shook and there was a loud explosion simultaneously. The power went out, it was pitch dark. I go into the hallway and it was pitch black - no lights, nothing."
Stewart Dyer, 40, who was staying at the hotel with his wife and nine-month-old daughter, added: "It was scary because we couldn't get the security lock off the door in the dark, and hence we couldn't get the door open. Someone thankfully heard us and gave the door a push and we were able to get out."
The hotel in central London that was rocked on Friday night by a blast has issued a statement, saying that 12 employees were injured in a "gas explosion."
Hyatt Regency Churchill in London experienced a gas explosion in the basement early this morning.
Twelve Hyatt associates were treated for injuries.
No guests were injured, and all guests were evacuated to nearby hotels. Hyatt's top priority is the safety and wellbeing of our guests and associates, and we are currently working to provide guests with accommodations while we evaluate whether the hotel suffered any significant damage.
A top London hotel has been evacuated after a suspected gas explosion in the basement caused part of the building to collapse.
The Churchill Hyatt Regency hotel in Portman Square, central London, was evacuated following the suspected gas explosion at around 11.40pm yesterday and a number of people were being treated by paramedics.
A spokesman for London Fire Brigade said 500 people had to be evacuated from the hotel, forcing them out on to the street as a result of the explosion
Around 80 firefighters were on the scene, including appliances with specialist equipment to deal with collapsed buildings.
The full extent of the damage is not known at this stage and all people were accounted for, a spokesman for London Fire Brigade said.
The London Fire Brigade later tweeted:
The London Ambulance Service have now said that 14 people were treated for injuries after a blast at the Churchill Hyatt Regency Hotel in Portman Square in central London - with only five people requiring hospital treatment.
12 people have been injured, six of whom were taken to hospital following a suspected gas explosion at the Hyatt Regency Hotel in Portman Square, central London late last night.
Six people were treated at the scene and were not taken to hospital, a spokesperson for the London Ambulance Service has said.
A further six casualties were taken to hospital for further treatment, with two men sustaining leg injuries in the blast.
It is thought that the blast occurred in in the basement caused part of the building to collapse, London Fire Brigade has said.
A hotel has been evacuated after a suspected gas explosion at a hotel on Portman Square, central London, the Metropolitan Police have said.
Police say a "small number" of casualties are being treated.
Police were called to the hotel - thought to be the Churchill Hyatt Regency Hotel in Portman Square just before midnight.
The Fire Brigade and London Ambulance Service are also in attendance.