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”.

Follow live updates on Heathrow closure

Passengers have been warned to stay away from the airport and all trains to Heathrow have been suspended.

“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.”

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.

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.

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Stranded passengers

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.”

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.

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.

Earlier pictures from the scene – on Nestles Avenue – showed large flames and plumes of thick black smoke.

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.

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.

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.

Sudan’s military has said it has retaken the Republican Palace in Khartoum, the last heavily guarded bastion of rival paramilitary forces in the capital, after nearly two years of fighting.

The current conflict in Sudan erupted in April 2023 when a power struggle between the leaders of the military and the Rapid Support Forces (RSF) boiled over into open fighting in Khartoum and other cities.

Social media videos showed the military’s soldiers inside on the 21st day of Ramadan, the holy Muslim fasting month.

A Sudanese military officer wearing a captain’s epaulettes made the announcement in a video and confirmed the troops were inside the compound.

Eyewitness: Waiting and praying for news of victory after two years of war

The palace appeared to be partly in ruins, with soldiers’ steps crunching broken tiles underneath their boots.

Soldiers carrying assault rifles and rocket-propelled grenade launchers chanted: “God is the greatest!”

Sudan’s information minister said the military had retaken the palace in a post on X.

“Today the flag is raised, the palace is back and the journey continues until victory is complete,” he wrote.

Read more: Maps show Sudan conflict’s shifting frontlines as SAF regains territory

The Republican Palace was the seat of government before the war erupted and is immortalised on Sudanese banknotes and postage stamps.

Its recapture by the military marks another gain for Sudan’s military which has made steady advances in recent months.

The rival RSF has been mostly expelled from the capital of Khartoum after Sudan’s war began in April 2023.

Gunfire was heard in the capital overnight on Friday, although whether this was from fighting or celebrations is unclear.

The RSF hasn’t acknowledged the loss of the presidential palace but the group still holds territory elsewhere in Sudan so fighting is likely to continue.

The war has killed more than 28,000 people, according to UN figures, and forced millions to flee their homes.

Families have been left eating grass in a desperate attempt to survive a famine that is sweeping through parts of the country.

Israeli strikes killed at least 85 Palestinians across the Gaza Strip overnight and into Thursday, according to the Hamas-run health ministry.

Five UN staff members have also been killed, according to the head of the UNRWA.

It comes as fighting in the enclave has restarted in recent days.

Philippe Lazzarini, head of UNRWA, the United Nations Palestinian relief agency, said on Thursday: “In the past few days, another five UNRWA staff have been confirmed killed, bringing the death toll to 284.

“They were teachers, doctors and nurses: serving the most vulnerable.”

He added he feared “the worst is yet to come”.

“Under our daily watch, people in Gaza are again and again going through their worst nightmare,” he said in a statement.

“An endless unleashing of the most inhumane ordeals.”

Speaking in Parliament, Foreign Secretary David Lammy said the UK government opposed the resumption of Israel’s hostilities and added that a British national was among the wounded when a UN compound was struck on Wednesday.

Israel has previously said it only targets militants and blames civilian deaths on Hamas because it operates in densely populated areas.

It denied previous reports it had targeted a UN compound.

Israel resumes strikes

On Tuesday, Israel resumed heavy airstrikes on the enclave killing more than 400 people, bringing to a halt the ceasefire that had paused fighting in the 17-month war.

A day later, the Israeli Defense Forces (IDF) relaunched ground operations, seizing part of a key corridor that divides the north and south of Gaza – the Netzarim corridor.

On Thursday, the IDF said it had begun a ground operation in northern Gaza.

Meanwhile, Hamas fired three rockets at Israel without causing casualties.

It was the first such attack since the resumption of the IDF’s strikes.

Hospitals across Gaza said the strikes hit houses in Khan Younis and Rafah in southern Gaza and the northern town of Beit Lahiya.

The Israeli military said it was looking into the reports.

The European Hospital in Rafah said 26 people, mostly women and children, had been killed in strikes on two family homes overnight.

A father and his seven children were killed in one of the attacks, it added.

The Nasser Hospital in Khan Younis received the bodies of seven people killed overnight in an attack on a home, it said.

Meanwhile, Hamas said talks with mediators were ongoing.

Fragile ceasefire

Hamas and Israel disagreed over how to proceed with the ceasefire after phase one came to an end.

The militant group wanted to move onto phase two to negotiate Israel’s permanent withdrawal from Gaza, the release of hostages in exchange for more prisoners and an eventual end to the war.

Read more:
What happened to the Israel-Hamas ceasefire?
Siblings among those killed in one of Gaza’s deadliest days

Israel wanted to temporarily extend phase one and for more hostages to be released.

It cut off all supplies to Gaza to try and pressure the group into doing so before restarting its military campaign.

The war started after Hamas militants attacked Israeli communities in October 2023, killing 1,200 people and taking more than 250 hostages.

More than 49,000 Palestinians have been killed in the ensuing conflict, according to Gaza’s health authorities,