Travel as normalpublished at 16:41 Greenwich Mean Time 12 December 2014
Gatwick Airport tweets, external: Please travel to the airport as normal and contact your airline for the latest flight information.
Summary
Updates from Friday 12 December 2014
Travel as normalpublished at 16:41 Greenwich Mean Time 12 December 2014
'Pretty messy'published at 16:40 Greenwich Mean Time 12 December 2014
BBC News ChannelTravel editor at the Independent Simon Calder told the BBC News Channel: "If you're waiting for people and they should have landed but haven't, that might be because they've landed in Paris or Brussels.
"It's looking pretty messy," he added.
Flights begin to resumepublished at 16:39 Greenwich Mean Time 12 December 2014
London City Airport tweets, external: Flights beginning to resume there will be cancellations & delays so please check with your airlines
Help on the groundpublished at 16:38 Greenwich Mean Time 12 December 2014
Flight solutions company Flightworx Aviation tweets, external: Our flight support team fielding questions about the airspace closure. @BBCLondonNews, external
Image source, Flightworx Aviation'Bit bored'published at 16:36 Greenwich Mean Time 12 December 2014
Carla Narth from London said: "I'm heading to San Francisco. We were supposed to leave Heathrow an hour ago but the pilot has told us that the main air traffic control system has died. He said this means all the flights are grounded at Heathrow and we've been put into a queue.
"He still thinks we'll be setting off at some point and told us the system is being rebooted. Everyone on the flight is just a bit bored."
View from Norwichpublished at 16:33 Greenwich Mean Time 12 December 2014
At Norwich International Airport, external says flights north are still operating but any flights passing through London airspace will be subject to delays and arrivals may be diverted.
'Chaos' at airportpublished at 16:33 Greenwich Mean Time 12 December 2014
Hamish Lynde tweets, external: @BBCLondonNews, external been sitting at @HeathrowAirport, external on #AC855 for nearly 2 hours now. Chaos. @AirCanada, external
Image source, Hamish LyndeAirspace openpublished at 16:31 Greenwich Mean Time 12 December 2014
Heathrow has said they understand from NATS that airpsace has now been reopened and they are in the process of getting flights back to normal.
Airport round-uppublished at 16:31 Greenwich Mean Time 12 December 2014
Birmingham Airport says, external flights are being re-routed to avoid flying through London.
Glasgow says, external it is experiencing delays on departures while Aberdeen says, external it has been told the situation has been resolved but there could be knock-on delays.
Southampton, external has all flights currently suspended,
System restoredpublished at 16:28 Greenwich Mean Time 12 December 2014
Nats tweets, external: System has been restored and we are in the process of returning to normal operations. For more information please see nats.aero/news/swanwick-technical-failure-update-1615/ …, external
Easyjet: 'All flights are affected'published at 16:28 Greenwich Mean Time 12 December 2014
In a statement Easyjet has said: "The recent failure of the computer systems at NATS' Swanwick air traffic control centre is currently affecting all flights in to and out of UK airspace.
Image source, PA"We advise passengers to check the flight tracker at easyjet.com, external for the latest information and to be prepared for delays and possible cancellations.
"It is too early to say how many passengers and flights will be affected."
'Very quiet'published at 16:27 Greenwich Mean Time 12 December 2014
Mike Wainwright tweets, external: West London is looking VERY quiet now. You can usually see 5-6 planes coming in at all times from here! #Shhh
Manchester delayspublished at 16:26 Greenwich Mean Time 12 December 2014
John J says flights to Manchester have also been affected., external
He's sat on a plane in Stockholm and says he's were grounded until UK airspace reopens.
From Birmingham Airportpublished at 16:25 Greenwich Mean Time 12 December 2014
At Birmingham Airport, external - a spokesman says some south bound flights are being diverted around London airspace.
The airport has had no requests for diverts from any other airports to accept diverted flights.
Northbound flights are unaffected.
'Manage the situation'published at 16:24 Greenwich Mean Time 12 December 2014
NATS have said: "UK airspace has not been closed, but airspace capacity has been restricted in order to manage the situation."
Planes lined uppublished at 16:22 Greenwich Mean Time 12 December 2014
Beth Rose
BBC News OnlineThis is how Heathrow currently looks with the planes lined up runway unable to depart.
Issue 'resolved'published at 16:22 Greenwich Mean Time 12 December 2014
Aberdeen Airport tweets:, external We are told that the issue has now been RESOLVED. Could be knock-on delays as normality is restored but system returning to normal.
'Long, stressful' eveningpublished at 16:21 Greenwich Mean Time 12 December 2014
BBC News ChannelTravel editor at the Independent Simon Calder told the BBC News Channel: "This is Friday evening - the busiest day of the travelling week.
"It's going to be a long, stressful afternoon and evening."
Leeds Bradford Airportpublished at 16:19 Greenwich Mean Time 12 December 2014
Leeds Bradford Airport, external says all flights out and most flights in are suspended until 1900.
'Some delays' at London Oxford Airportpublished at 16:18 Greenwich Mean Time 12 December 2014
Beth Rose
BBC News OnlineLondon Oxford Airport, external says it is experiencing "some delays" as a result of the problems, mainly services arriving from overseas.
Local air traffic is not affected.