More than 100 flights have been cancelled after an air traffic control issue in the UK
National Air Traffic Services (NATS) says the problem is now resolved, but delays and cancellations are still being reported across the country
As of 19:30 BST, 67 departures from the UK had been cancelled, plus 55 arrivals, according to analytics firm Cirium
In a statement, NATS says it is working with affected airlines and airports "to clear the backlog safely" and apologises to all those affected
Passengers have kept us updated on their delayed journeys - Asha, 18, says her first holiday interrailing has gone wrong while David and his family say "everyone's in good spirits" despite their Crete-Birmingham flight being diverted to Paris
Are you affected by the flight delays? Email: bbcyourvoice@bbc.co.uk, external, or WhatsApp: +44 7756 165803, external
Here's a new update from the UK's busiest airport.
A Heathrow spokesperson says: "Flights at Heathrow have resumed following a technical issue at the NATS Swanwick air traffic control centre.
"We are advising passengers to check with their airline before travelling. We apologise for any inconvenience caused."
In the last few moments, Stansted airport has issued information for passengers.
In a post on X, it says the air traffic control issue is affecting flights across the country - "meaning many departures and arrivals are currently impacted".
It has advised passengers to follow the advice of airlines for updates on their flights.
Michael Race
Business reporter, BBC News
We are still awaiting details on whether any flights have been cancelled, rather than just delayed.
Passengers have a number of rights under UK law, , externalif they are:
Airlines must offer the choice of a refund or alternative flight, regardless of how far in advance the cancellation was made.
Return tickets must be fully refunded if either leg is cancelled.
And passengers have a right to be booked on another airline - or other suitable mode of transport - if it is going to their destination significantly sooner.
Sam Hancock
Live page editor
Half an hour ago, National Air Traffic Services (NATS) reported a technical issue at its control centre in Southampton, on the south coast of England.
Here's what we know so far:
And what we don't know:
We'll continue to bring you the latest as we get it - stay tuned.
Tom Joyner
Live reporter
I’m sitting in an EasyJet aircraft on the tarmac at Gatwick airport.
We were meant to take off about an hour ago (at 15:20 BST) towards Budapest, but so far haven’t moved.
Around me, other passengers are in good spirits and flight attendants are handing out cups of water.
Briefly, the captain’s voice crackles over the speaker, telling us Gatwick air traffic control say things are looking a bit more encouraging.
"They’ve turned it off and turned it back on again," he says, to a roar of laughter from the cabin.
"Apparently the problem has been fixed."
But we’re told it may be another 45 minutes until we get moving.
Rozina Sini
BBC News
Image source, Kirk RyanKirk Ryan, from Liverpool, is on a Jet2 plane at Liverpool airport with his wife and two children, aged two and seven.
They have been told their flight to Turkey cannot leave due to the air traffic control issue.
“We were on the runway then the pilot announced there was a major outage," he tells me.
"They said [...] there was a catastrophic air traffic failure in London."
Ryan explains the plane had been on the runway for an hour, and adds: "The pilot has been very transparent.
"They want to save fuel so they’ve pulled us back to the gate and the back doors are open so they can get some air flowing, so they can turn the air conditioning off to preserve fuel.
"The pilot said there’s a 140 Jet2 planes under the same instruction.
"The children are devastated but they’ve been allowed onto the flight deck."
Another airport in the UK is reporting issues now.
Edinburgh airport says all departures are being held due to the NATS technical issue.
"We are waiting for further information from NATS and will provide updates when possible," the airport says on X. "Please check with your airline for the latest information on your flight."
The latest update from NATS - short for National Air Traffic Services - is in.
"Our engineers have now restored the system that was affected this afternoon," the statement says.
"We are in the process of resuming normal operations in the London area.
"We continue to work closely with airline and airport customers to minimise disruption.
"We apologise for any inconvenience this has caused."
A Birmingham airport spokesperson says: "Due to a national issue with air traffic control in the South of England, departing flights have been temporarily suspended.
"We will provide further updates on this and apologise for the inconvenience it may cause."
Simon Browning
Transport correspondent
Manchester Airport Group says all outbound departures from Manchester Airport, Stansted and East Midlands are now on hold.
Inbound aircraft on final approach to these airports can land, but nothing else, which the airport say will lead to diversions.
As we just reported, London Gatwick Airport has just tweeted that a technical issue impacting NATS is affecting all outbound flights across the UK.
There are currently no departures from London Gatwick while the situation is resolved. It is working with NATS to resume flights as quick as possible.
Gatwick says inbound flights are still landing at the airport.
This is the second time in two years NATS has suffered a huge outage, the last was during a summer bank holiday weekend in 2023.
A huge amount of work has been done to try avoid this situation happening again.
We're now hearing from Gatwick airport.
"A technical issue impacting NATS is affecting all outbound flights across the UK," Gatwick says, adding:
"There are currently no departures from London Gatwick while the situation is being resolved. We are working with NATS to resume flights as quickly as possible.
"Inbound flights are still landing at the airport. Passengers should check the status of their flights with their airline."
The National Air Traffic Services (NATS) says:
"As a result of a technical issue at NATS Swanwick air traffic control centre, we are limiting the number of aircraft flying in the London control area in order to ensure safety, which is always our first priority.
"We apologise for any delays this may cause.
"Our engineers are working hard to resolve the problem as quickly as possible and we are working closely with airlines to help minimise disruption.
"At this stage we cannot say how long it will be before operations are back to normal. Please check with your airline on the status of your flight."
We've a bit more to bring you now from National Air Traffic Services (NATS).
They say: "Our engineers are working hard to resolve the problem as quickly as possible and we are working closely with airlines to help minimise disruption."
We'll bring you the statement in full in our next post.
Due to a technical issue at an air traffic control centre, the number of flights in the London area is being limited.
Stay with us for more.