Heathrow Airport is to remain shut until midnight after a large fire at a nearby electricity substation, disrupting travel for thousands of passengers.
Tracking site Flightradar24 estimates 1,357 flights would be affected (679 into and 678 out of Heathrow) today, including around 120 which were already in the air this morning before the shutdown.
Energy Secretary Ed Miliband told Sky News “it was too early to know” what caused the “catastrophic fire”.
Passengers have been warned to stay away from the airport and all trains to Heathrow have been suspended.
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0:29
Substation fire near Heathrow Airport
“To maintain the safety of our passengers and colleagues, we have no choice but to close Heathrow until 23h59 on 21 March 2025,” Heathrow said in a statement.
“We expect significant disruption over the coming days and passengers should not travel to the airport under any circumstances until the airport reopens.”
Image: It is estimated up to 1,357 flights could be affected. Pic: Reuters
Image: Airplanes stuck at terminal gates. Pic: Reuters
Planes usually begin landing and taking off at around 5am after the regular overnight quiet period.
Around 120 flights were bound for Heathrow when the airport announced it would be closing for the day. Some will have turned back to the airport they departed from. But others were already crossing the Atlantic and have been diverted to airports in Europe.
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Data from Flightradar24 shows Amsterdam has taken the most diversions at seven, while Gatwick, Frankfurt and Shannon have all taken six flights each.
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.
Flightradar24 estimates that means there are about 220,000 passengers using the hub every day.
Its total closure is set to have knock-on effects on airline operations around the world for several days to come.
Matt, who is waiting at Canada’s Vancouver International Airport, told Sky News that British Airways “have been great” and they had been rebooked for a flight on Saturday. “Fingers crossed Heathrow is open!” he added.
But Raman who is stuck in Dubai said: “Flight keeps getting delayed – just seems crazy that BA won’t cancel it considering Heathrow is closed anyway. Zero comms from BA.”
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0:40
‘It’s all dark here, mate’: Fire cuts Heathrow power
British Airways, the biggest carrier at Heathrow, reiterated that customers should not go to the airport until further notice.
A statement said: “This will clearly have a significant impact on our operation and our customers and we’re working as quickly as possible to update them on their travel options for the next 24 hours and beyond.”
Gatwick Airport said in a statement that it is “supporting by accepting diverted flights as required” and that it is operating “as normal today”.
Meanwhile Ryanair has launched what it is calling eight “rescue flights” for passengers affected by the Heathrow closure.
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16,000 homes without power
The fire that caused the power outage is at a substation in Hayes, about 1.5 miles to the north of the airport, and an estimated 16,000 homes nearby are also without electricity.
London Fire Brigade (LFB) said the blaze was now under control and, while there have been no casualties, crews evacuated 29 people from neighbouring properties.
Image: Drone footage shows the fire at the substation in Hayes, west London
Image: Fire crews attended the blaze overnight. Pic:London Fire Brigade/PA
Image: In the morning, smoke continued to rise from the substation. Pic: Reuters
Image: Fire crews said the blaze was now under control. Pic: PA
Earlier pictures from the scene – on Nestles Avenue – showed large flames and plumes of thick black smoke.
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LFB said 10 engines and around 70 firefighters had been working to extinguish the blaze – with the first 999 call received at 11.23pm on Thursday.
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It said a transformer within the North Hyde substation had caught alight but the cause is so far unknown.
A National Grid spokesperson said they “working at speed to restore power supplies as quickly as possible” after the fire damaged equipment.
Image: Emergency services at the cordon near North Hyde substation in Hayes. Pic: PA
Image: Pic: PA
Backup generator also failed
Energy Secretary Ed Miliband told Sky News there was a backup generator but it was also affected by what he called a “catastrophic fire”.
He described the situation as “unusual and unprecedented” adding it was “too early to know” what caused the substation blaze.
Fire was ‘significant incident’
LFB Assistant Commissioner Pat Goulbourne said it was a “significant incident” but crews “successfully contained the fire and prevented further spread”.
“While power has been restored to some properties, we continue to work closely with our partners to minimise disruption,” he added. Local residents have been told to keep their windows and doors closed.
Scottish and Southern Electricity Networks said shortly after midnight that a “widespread power cut” was affecting Hayes, Hounslow and surrounding areas.
A graphic on the company’s website suggested around 16,000 homes were affected.
A police van has been set on fire and missiles have been thrown at officers as protesters gathered outside a hotel used to house asylum seekers in Dublin.
It is the second night of demonstrations outside the Citywest Hotel after an alleged sexual assault in its vicinity in the early hours of Monday morning.
A large crowd has gathered in the area and members of the Garda’s public order unit have been deployed.
Footage from the scene showed a Garda vehicle on fire as well as several protesters displaying Irish flags.
Image: Many protesters carried Republic of Ireland flags
Some of the crowd threw stones and other missiles at the public order officers as they moved the protesters back.
A Garda helicopter hovered overhead and a water cannon was deployed on the scene.
Ireland’s justice minister, Jim O’Callaghan, said those involved will be brought to justice.
“The scenes of public disorder we have witnessed at Citywest tonight must be condemned,” he said.
“People threw missiles at Gardai, threw fireworks at them and set a Garda vehicle on fire.
“This is unacceptable and will result in a forceful response from the Gardai.
“Those involved will be brought to justice.”
The minister said a man had been arrested and had appeared in court in relation to the alleged assault in the vicinity of the hotel.
He added: “While I am not in a position to comment any further on this criminal investigation, I have been advised that there is no ongoing threat to public safety in the area.
He said attacks on gardai will “not be tolerated”, adding: “Peaceful protest is a cornerstone of our democracy. Violence is not.
“There is no excuse for the scenes we have witnessed tonight.”
It was the second night of protest outside the hotel, which is being used as state accommodation for people seeking international protection. The demonstration on Monday night passed without a significant incident.
It comes two years after anti-immigrant demonstrators triggered a major riot in the centre of Dublin after three young children were stabbed.
This breaking news story is being updated and more details will be published shortly.
The US leader suggested it was possible it could happen within a fortnight, though no date was set.
However, it appears that’s now off the table – and there are fears the meeting could be shelved altogether due to Russia‘s rigid stance on the Ukraine war.
The White House official, speaking to Sky’s US partner network NBC, said secretary of state Marco Rubio and Russian foreign minister Sergei Lavrov had spoken on Tuesday.
The call was described as “productive” but the official added there was no plan for the presidents to meet “in the immediate future”.
The last Trump-Putin meeting was in Alaska in August, but it ended without any meaningful progress towards a ceasefire.
The Budapest plan was announced shortly before Ukrainian President Volodymyr Zelenskyy travelled to Washington last Friday to try to get approval for long-range Tomahawk missiles.
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3:42
Why Tomahawks are off the table
Mr Zelenskyy accused the Russian leader of acting out of fear Ukraine could get the green light and the ability to hit targets far deeper into Russia.
In his nightly address on Tuesday, he said Russia “almost automatically became less interested in diplomacy” after it became clear Mr Trump had backed away from any decision on the Tomahawks.
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45:28
Professor Michael Clarke answers your questions on the Ukraine war.
Two US officials told Reuters that plans for the Budapest meeting had stalled over Russia’s insistence any peace deal must give it control of all of the Donbas region.
Those terms are said to have been reiterated over the weekend in a private communique known as a “no paper”.
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Ukraine and European nations issued a joint statement on Tuesday insisting “international borders must not be changed by force” and accusing Russia of “stalling tactics”.
But, in an apparent effort to keep the US leader onside, it added: “We strongly support President Trump’s position that the fighting should stop immediately, and that the current line of contact should be the starting point of negotiations.”
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1:59
Trump: ‘We can end this war quickly’
Kremlin spokesman Dmitry Peskov gave the impression his country was in no rush to arrange another Trump-Putin meeting, saying on Tuesday “preparation is needed, serious preparation”.
Such talk is likely to increase concerns Russia does not want to stop fighting and is “playing” President Trump – all while continuing to launch drone barrages at Ukrainian cities.
Russia currently holds about a fifth of Ukraine after its invasion in February in 2022. It also annexed the Crimean peninsula in 2014.
Meanwhile, NATO’s secretary general Mark Rutte is travelling to Washington to meet with President Trump on Wednesday.
He will “discuss various aspects related to NATO’s support to Ukraine and to the US-led efforts towards lasting peace”, an official for the alliance said.
Eight countries have been added to a UK Foreign Office (FCDO) list warning Britons of a risk of methanol poisoning from tainted alcohol.
Guidance has been added to the FCDO’s travel pages for Ecuador, Kenya, Japan, Mexico, Nigeria, Peru, Uganda and Russia after an increase in cases of serious illness and death caused by alcoholic drinks tainted with methanol.
The list previously only included methanol poisoning guidance for countries where British nationals have been affected.
This included: Cambodia, Indonesia, Turkey, Costa Rica, Thailand, Vietnam, Laos and Fiji.
The 28-year-old from Orpington, Kent, was one of four, including an Australian woman and two Danish women, who died after being treated for methanol poisoning.
As part of the FCDO Travel Aware campaign, it is issuing information on recognising the symptoms and reducing the risks of methanol poisoning.
Hamish Falconer, the minister responsible for consular and crisis, said: “Methanol poisoning can kill – it can be difficult to detect when drinking and early symptoms mirror ordinary alcohol poisoning. By the time travellers realise the danger, it can be too late.
“I encourage all travellers to check our travel advice and Travel Aware pages before they go on holiday.”
Image: Vang Vieng, Laos. File pic: iStock
What is methanol?
Methanol, or CH3OH, is very similar to ethanol – the pure form of alcohol in alcoholic drinks.
Like ethanol, it is an odourless, tasteless, and highly flammable liquid – but it has a different chemical structure that makes it toxic for humans.
Otherwise known as wood alcohol, methanol is most often used to make solvents, pesticides, paint thinners, and alternative fuels.
What makes it so dangerous is the way our bodies metabolise it.
Once consumed, our enzymes metabolise methanol into formaldehyde, the substance used to make industrial glue and embalming substances, before breaking it down into formic acid.
“The formic acid upsets the acid balance in blood and the major consequence is initially the effect on someone’s breathing. There are effects on many other organs, the kidney being one,” says Professor Alastair Hay, emeritus professor of environmental toxicology at the University of Leeds.
“Formaldehyde attacks nerves, particularly the optic nerve and blindness is a potential risk,” he adds.
Image: Travelling Britons should avoid counterfeit alcohols. Pic: iStock
How does it end up in alcoholic drinks?
In southeast Asia and other popular tourist destinations, methanol can be found in alcoholic drinks for two main reasons.
Firstly, it is cheaper than ethanol, so it is sometimes added instead to save costs, before the counterfeit alcohol is bottled and sold in shops and bars.
Alternatively, it can occur by accident when alcohol is homemade – something common across the region.
When alcohol is distilled and fermented without the appropriate monitoring, it can sometimes produce methanol in toxic quantities.
Because it is impossible to tell the difference between methanol and ethanol content without specialist equipment, homemade drinks are often offered to tourists without anyone knowing how dangerous they are.
Image: Simone White died of methanol poisoning in Laos in 2024
What are the symptoms of methanol poisoning?
Methanol is highly toxic, so as little as 25ml can prove fatal.
Methanol poisoning can be treated by using ethanol to counter the effects on the body – but only within the first 10 to 30 hours after consumption.
This makes early diagnosis and warnings to others critical. Some symptoms, however, can appear 12–48 hours after drinking.
The most common symptoms are:
• Vomiting and nausea; • Changes in vision, including blurring, loss of sight, tunnel vision and difficulty looking at bright lights; • Abdominal and muscle pain; • Dizziness and confusion; • Drowsiness and fatigue.
Methanol poisoning symptoms are similar to those from alcohol poisoning – but are often more severe. If drinks were left unattended or your symptoms appear disproportionate to the amount you drank, it could be methanol poisoning, authorities warn.
How is it treated?
Professor Hay says treatment involves removing methanol from the blood via dialysis – while “keeping someone mildly drunk” by giving them ethanol at the same time.
“The principle behind administering ethanol is quite simple; it delays methanol metabolism,” he says.
“Both alcohols are broken down by the same liver enzyme, alcohol dehydrogenase. But the enzyme prefers ethanol.
“So ethanol acts as a competitive inhibitor largely preventing methanol breakdown, but markedly slowing it down, allowing the body to vent methanol from the lungs and some through the kidneys, and a little through sweat.”
This avoids the process of methanol ultimately metabolising as formic acid, he adds.
How can you avoid it while travelling?
The most commonly affected drinks are:
• Local spirits, such as rice and palm liquor, often labelled ‘special’ or ‘happy’ drinks; • Spirit-based mixed drinks such as cocktails; • Counterfeit brand-name bottled alcohol sold in bars and shops.
In order to minimise risks, travellers should:
• Buy alcohol only from licensed bars, hotels, or shops; • Check labels for signs bottles may be counterfeit, including poor print quality or spelling errors; • Avoid homemade alcohol; • Check bottles are properly sealed before drinking from them; • Avoid free drinks you have not seen poured yourself; • Do not leave drinks or food unattended.