EPAFlights around the world have been disrupted after Heathrow Airport closed due to a fire at a nearby electrical substation.
Heathrow, the UK’s busiest airport, said it was experiencing “significant” disruption after the blaze at North Hyde substation in Hayes, west London.
More than 1,300 flights have been affected, tracking website Flightradar24 said, and passengers have been told not to travel to the airport until further notice.
Here’s what we know so far.
Why is Heathrow closed?
A fire at an electrical substation in west London, which supplies Heathrow, caused a major power outage at the airport, prompting its closure.
It is not yet known what caused the fire at the substation, but emergency services were first called to Nestles Avenues in Hayes, west London at 23:23 GMT on Thursday.
The London Fire Bridge said the fire was under control by 06:28.
The substation is only about a mile and a half away from the airport.
Energy Secretary Ed Miliband told BBC Radio 4’s Today programme the substation’s back-up generator “appears to have been knocked out”.
Videos shared on social media showed tall flames and plumes of smoke billowing from the substation overnight.
People living nearby have been advised to keep doors and windows closed to avoid smoke inhalation. Several road closures are in place.
PA MediaHow long will Heathrow be closed?
The airport will be closed until at least 23:59 on 21 March, Heathrow said in a statement, but it warned customers to expect “significant disruption over the coming days”.
The travel disruption was expected to affect many other airports, as airlines cancelled and diverted flights.
Heathrow said it does “not have clarity on when power may be reliably restored”.
The airport has apologised for the disruption and has advised passengers to contact their airlines for further information.
Its helpline number is 020 8757 2700.
Who has been affected?
At least 1,351 flights to and from Heathrow will be affected on Friday, Flightradar24 said, with some 120 affected aircraft already in the air when the closure was announced.
In addition to passengers expecting to fly, disruption has been caused to thousands of homes in west London, which have been left without power.
About 150 people to be evacuated from surrounding properties.
More than 16,300 homes have lost power in a large-scale outage caused by the fire, energy supplier Scottish and Southern Electricity Networks (SSEN) said.
“We’re aware of a widespread power cut affecting many of our customers around the Hayes, Hounslow and surrounding areas,” it added.
The National Grid UK also said it was “working at speed to restore power supplies.
So far, power has been restored to 62,000 customers, with 4,900 currently without power.
The Heathrow Express railway service said it was running a reduced half-hourly service to help passengers leave the terminals.
It said it was not accepting passengers at Paddington station.
What happens now?
Customers have been told to stay away from the airport until further notice and to contact their airlines directly, with flights cancelled and diverted to other airports.
All Virgin Atlantic flights arriving and departing flights from Heathrow have been cancelled until midday on 21 March, the airline said.
US-based carrier United Airlines told the BBC that “following the closure, seven United flights returned to their origin or to other airports”, adding that additional flights to Heathrow have been cancelled.
The airline said it was working with its customers to offer alternative travel options.
Gatwick Airport told the BBC it was aware of the situation at Heathrow Airport and stands “ready to support as required”.
Several of Australia’s Qantas airline planes have been diverted from London to Paris, with other flights likely to be affected, it said.
British Airways warned of “significant impact” to its services.
Amsterdam’s Schiphol Airport said around 30 flights are scheduled to and from London Heathrow, but so far only half of them have been cancelled.
Cathay Pacific, Hong Kong’s main airline cancelled all its flights to London today.
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