Heathrow Airport has reopened for a limited number of flights after a large fire at a nearby electrical substation disrupted travel for around 200,000 passengers.
Counter-terror police were leading the investigation into the cause of the blaze, which triggered a “significant power outage” that led to more than 1,000 flights to and from the airport being cancelled.
Heathrow’s boss apologised to passengers, describing the disruption “as big as it gets for our airport” and admitting “we cannot guard ourselves 100%”.
In an update on Friday evening, the Metropolitan Police said the cause of the fire is believed to be non-suspicious, while the London Fire Brigade (LFB) announced its investigation will focus on the electrical distribution equipment.
Heathrow is expected to run a full schedule on Saturday.
Image: The proximity of Heathrow to the electrical substation
The fire that caused the power outage is at the North Hyde substation in Hayes, about 1.5 miles to the north of the west London airport.
LFB received the first reports of the fire at 11.23pm on Thursday.
Heathrow initially announced the airport would be closed until 11.59pm on Friday but later said repatriation flights for passengers diverted to other airports in Europe would resume on Friday evening.
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0:43
Heathrow outage nearly ‘as big as it gets’
Several airlines announced they would restart scheduled flights both to and from Heathrow, including British Airways (BA), Air Canada and United Airlines.
A BA flight to Riyadh, in Saudi Arabia, took off just before 9pm after a slight delay to its expected departure time.
Restrictions on overnight flights have also been temporarily lifted to help ease congestion, the Department of Transport said.
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0:53
Runways deserted as substation fire is put out
Image: Flightradar24 showed up to 120 planes in the air would be forced to divert or turn back. Pic: Flightradar24/X
Airport disruption nearly ‘as big as it gets’
Heathrow Airport’s chief executive Thomas Woldbye told reporters the flights taking off on Friday evening would help make sure the airport has “operations in place” for Saturday morning.
He continued: “Tomorrow morning we expect to be back in full operation, so 100% operation as a normal day.”
Image: Passengers arrive at Heathrow Airport as flights resume. Pic: AP
Mr Woldbye added that passengers who were planning to fly from Heathrow on Saturday should arrive at the airport in time for their flight as normal.
The chief executive also apologised to the passengers whose journeys had been disrupted but said he would not have closed down the airport unless there were “severe safety concerns”.
Image: The height of the fire was described as ‘absolutely apocalyptic’. @JoselynEMuirhe1/X/PA
Image: Pic: AP
Asked whether the disruption caused by the fire suggested there was a “weak point” in Heathrow’s operations, Mr Woldbye replied: “We can’t guard ourselves 100%. This has been a major incident.
“Short of anybody getting hurt, this is as big as it gets for our airport and we are actually coming back quite fast.”
He added: “This is unprecedented, it’s never happened before.”
It comes after Number 10 said earlier that there are questions to be answered about how the fire has caused so much chaos.
Image: Stranded passengers at Heathrow Terminal 5. Pic: PA
Image: Pic: PA
Mr Woldbye said: “Our procedures have worked the way they should… Of course the prime minister should ask questions and we’ll be happy to answer them.”
Earlier, the airport said it expected “significant disruption over the coming days” and warned passengers “not travel to the airport under any circumstances until the airport reopens”. All trains to Heathrow were suspended.
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0:21
Moment Heathrow substation ignites
Some power has returned to Terminal 4, with lights in the main building and lifts in the multi-storey car park operational again.
The disruption began late on Thursday night when fire crews were called to a blaze in west London at an electricity substation serving Heathrow and local properties.
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0:40
‘It’s all dark here, mate’: Fire cuts Heathrow power
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Thousands of passengers stranded
Heathrow is one of the world’s busiest airports and had a record 83.9 million passengers last year, with a plane landing or taking off around every 45 seconds.
The figure, from the Civil Aviation Authority, is equivalent to about 229,000 passengers using the hub every day.
Aviation analytics firm Cirium told the New York Times that it believed as many as 290,000 passengers could have been affected on Friday – enough to fill Wembley Stadium three times.
Image: Smoke was continuing to rise above the North Hyde electrical substation this afternoon. Pic: PA
Image: Pools of what looks like foam surround the damaged substation. Pic: PA
Oil fire still alight at substation
LFB deputy commissioner Jonathan Smith told reporters at a news conference the fire involved a transformer – a key part of the substation – with 25,000 litres of cooling oil “fully alight”.
Image: Fire crews said the blaze was now under control. Pic: PA
Image: Aerial footage shows the scale of the damage the fire has done to the substation
Crews evacuated 29 people from neighbouring properties but there were no casualties.
In all, 67,000 households were left without power after the fire at the substation, but all supplies have been restored.
Earlier LFB said 10 engines and around 70 firefighters had been working to extinguish the blaze.
Pictures from the scene showed large flames and plumes of thick black smoke.
The LFB said in a statement that 5% of the fire was still alight as of 7pm on Friday.
Hundreds of UK online safety workers at TikTok have already signed agreements to leave the company, whistleblowers have told Sky News, despite the firm stressing to MPs that the cuts were “still proposals only”.
More than 400 online safety workers have agreed to leave the social media company, with only five left in consultation, Sky News understands.
“[The workers have] signed a mutual termination agreement, a legally binding contract,” said John Chadfield, national officer for the Communication Workers’ Union.
“They’ve handed laptops in, they’ve handed passes in, they’ve been told not to come to the office. That’s no longer a proposal, that’s a foregone conclusion. That’s a plan that’s been executed.”
Image: Moderators gathered to protest the redundancies
“Everyone in Trust and Safety” was emailed, said Lucy, a moderator speaking on condition of anonymity for legal reasons.
After a mandatory 45-day consultation period, the teams were then sent “mutual termination agreements” to sign by 31 October.
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Sky News has seen correspondence from TikTok to the employees telling them to sign by that date.
“We had to sign it before the 31st if we wanted the better deal,” said Lucy, who had worked for TikTok for years.
“If we signed it afterwards, that diminished the benefits that we get.”
Image: Three former moderators at TikTok have spoken to Sky News on camera
Despite hundreds of moderators signing the termination contracts by 31 October, Ali Law, TikTok’s director of public policy and government affairs for northern Europe, said to MPs in a letter on 7 November: “It is important to stress the cuts remain proposals only.”
“We continue to engage directly with potentially affected team members,” he said in a letter to Dame Chi Onwurah, chair of the science, innovation and technology committee.
After signing the termination contracts, the employees say they were asked to hand in their laptops and had access to their work systems revoked. They were put on gardening leave until 30 December.
“We really felt like we were doing something good,” said Saskia, a moderator also speaking under anonymity.
“You felt like you had a purpose, and now, you’re the first one to get let go.”
Image: TikTok moderators and union workers protested outside the company’s London headquarters in September
A TikTok worker not affected by the job cuts confirmed to Sky News that all of the affected Trust and Safety employees “are now logged out of the system”.
“Workers and the wider public are rightly concerned about these job cuts that impact safety online,” said the TUC’s general secretary, Paul Nowak.
“But TikTok seem to be obscuring the reality of job cuts to MPs. TikTok need to come clean and clarify how many vital content moderators’ roles have gone.
“The select committee must do everything to get to the bottom of the social media giant’s claims, the wider issues of AI moderation, and ensure that other workers in the UK don’t lose their jobs to untested, unsafe and unregulated AI systems.”
Image: Moderators and union representatives outside TikTok’s offices
When asked if the cuts were in fact a plan that had already been executed, Mr Law said there was “limited amounts” he could directly comment on.
TikTok told us: “It is entirely right that we follow UK employment law, including when consultations remained ongoing for some employees and roles were still under proposal for removal.
“We have been open and transparent about the changes that were proposed, including in detailed public letters to the committee, and it is disingenuous to suggest otherwise.”
The three whistleblowers Sky News spoke to said they were concerned TikTok users would be put at risk by the cuts.
The company said it will increase the role of AI in its moderation, while maintaining some human safety workers, but one whistleblower said she didn’t think the AI was “ready”.
“People are getting new ideas and new trends are coming. AI cannot get this,” said Anna, a former moderator.
“Even now, with the things that it’s supposed to be ready to do, I don’t think it’s ready.”
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12:04
Is TikTok improving safety with AI?
Lucy also said she thought the cuts would put users at risk.
“There are a lot of nuances in the language. AI cannot understand all the nuances,” she said.
“AI cannot differentiate some ironic comment or versus a real threat or bullying or of a lot of things that have to do with user safety, mainly of children and teenagers.”
TikTok has been asked by MPs for evidence that its safety rates – which are currently some of the best in the industry – will not worsen after these cuts.
The select committee says it has not produced that evidence, although TikTok insists safety will improve.
“[In its letter to MPs] TikTok refers to evidence showing that their proposed staffing cuts and changes will improve content moderation and fact-checking – but at no point do they present any credible data on this to us,” said Dame Chi earlier this month.
“It’s alarming that they aren’t offering us transparency over this information. Without it, how can we have any confidence whether these changes will safeguard users?”
Image: Dame Chi Onwurah speaks at the House of Commons. File pic: Reuters
TikTok’s use of AI in moderation
In an exclusive interview with Sky News earlier this month, Mr Law said the new moderation model would mean TikTok can “approach moderation with a higher level of speed and consistency”.
He said: “Because, when you’re doing this from a human moderation perspective, there are trade-offs.
“If you want something to be as accurate as possible, you need to give the human moderator as much time as possible to make the right decision, and so you’re trading off speed and accuracy in a way that might prove harmful to people in terms of being able to see that content.
“You don’t have that with the deployment of AI.”
As well as increasing the role of AI in moderation, TikTok is reportedly offshoring jobs to agencies in other countries.
Sky News has spoken to multiple workers who confirmed they’d seen their jobs being advertised in other countries through third-party agencies, and has independently seen moderator job adverts in places like Lisbon.
Image: John Chadfield, national officer for technology at the Communication Workers Union
“AI is a fantastic fig leaf. It’s a fig leaf for greed,” said Mr Chadfield. “In TikTok’s case, there’s a fundamental wish to not be an employer of a significant amount of staff.
“As the platform has grown, as it has grown to hundreds of millions of users, they have realised that the overhead to maintain a professional trust and safety division means hundreds of thousands of staff employed by TikTok.
“But they don’t want that. They see themselves as, you know, ‘We want specialists in the roles employed directly by TikTok and we’ll offshore and outsource the rest’.”
Mr Law told Sky News that TikTok is always focused “on outcomes”.
He said: “Our focus is on making sure the platform is as safe as possible.
“And we will make deployments of the most advanced technology in order to achieve that, working with the many thousands of trust and safety professionals that we will have at TikTok around the world on an ongoing basis.”
Asked specifically about the safety concerns raised by the whistleblowers, TikTok said: “As we have laid out in detail, this reorganisation of our global operating model for Trust and Safety will ensure we maximize effectiveness and speed in our moderation processes.
“We will continue to use a combination of technology and human teams to keep our users safe, and today over 85% of the content removed for violating our rules is identified and taken down by automated technologies.”
*All moderator names have been changed for legal reasons.
A 3.3-magnitude earthquake has struck Lancashire – with dozens of people saying it shook their homes or woke them up.
The British Geological Society (BGS) told Sky News it was “felt across the South Lakes and Lancashire, mainly within 20km of the epicentre”, including Kendal and Ulverston in neighbouring Cumbria.
Preliminary data suggests it struck off the coast of Silverdale at 11.23pm, at a depth of 1.86 miles (3km).
Each year, between 200 and 300 earthquakes are detected and located in the UK by the BGS.
Between 20 and 30 earthquakes are felt by people each year, and a few hundred smaller ones are only recorded by sensitive instruments.
Most of these are very small and cause no damage.
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This is the second time elections are being delayed in these areas. Local elections due in May 2025 weredelayedby then communities secretary Angela Rayner for a year in order to convert them into combined authorities led by mayors.
However, it is understood that these councils need more time to complete their reorganisation.
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4:53
Will Tories and Reform unite?
The news has sparked accusations Labour are delaying the elections for political purposes.
Reform UK’s head of policy Zia Yusuf said: “This is a blatant attempt to stop big Reform wins next May.
“It’s an act of a desperate government who are clinging onto power by any means necessary.
“Labour has proven time and time again that they’re not beyond denying democracy to millions of people in order to maintain their cosy status quo.”
Image: Pic: PA
The Tories’ shadow housing secretary James Cleverly said it was a “scandalous attempt to subvert democracy by a Labour government whose credibility and popularity are already in tatters”.
“The Conservatives firmly oppose this decision to delay the mayoral elections, especially when candidates have been selected and campaigning is well under way,” he added.
“Democracy is being denied yet again after the council elections cancelled by Labour this year.
“There is no credible justification for this move. The Labour government must reverse it immediately.”
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The government wants to abolish the two-tier system of county and district councils and merge them together to create larger unitary authorities. It also wants more areas to have regional mayors, like Greater Manchester’s Andy Burnham.
Reform UK enjoyed success in the local elections in May, winning more than 600 seats and taking control of 10 councils stretching from Kent to County Durham. The party also toppled a 14,000-strong Labour majority in a parliamentary by-election.
The Liberal Democrats’ local government spokesperson Zoe Franklin called the postponed elections “a disgrace”.
“Democracy delayed is democracy denied,” she added. “We are fighting to end this blatant stitch up between Labour and the Conservatives over local elections.”