United Kingdom's leading provider of air traffic control services on Monday revaled that British airspace was hit by a technical fault,as  airlines and airports warned of flight delays and possible cancellations.

This was revealed by the National Air Traffic Services (NATS) noting that it was experiencing a “technical issue” and had applied traffic flow restrictions to maintain safety.

It said in a statement: “We are currently experiencing a technical issue and have applied traffic flow restrictions to maintain safety.

“Engineers are working to find and fix the fault. We apologise for any inconvenience this may cause.”

Meanwhile, Heathrow, UK’s biggest and busiest airport, said that “as a result of national airspace issues there is disruption to flights across the UK” and advised passengers to check with their airline for the latest updates.

British Airways revealed it was “working closely with NATS to understand the impact of a technical issue that is affecting UK airspace” and will keep its customers updated.

Budget airline Ryanair, which mainly flies across Europe, noted that it will be “forced to delay/cancel a number of flights” to and from the UK on Monday.

Scottish airline Loganair meanwhile said that there has been a “network-wide failure of UK air traffic control computer systems” on Monday morning and warned of flight delays.

Airline Loganair warned customers that they might experience delays as a network-wide failure affected air-traffic control systems on Monday morning.

The Glasgow-based airline posted on X (formerly Twitter): “There has been a network-wide failure of UK air traffic control computer systems this morning.

“Although we are hopeful of being able to operate most intra-Scotland flights on the basis of local co-ordination and with a minimum of disruption, north-south and international flights maybe subject to delays.

“If you are flying with us today, please check our website for the latest information about your flight before setting off for the airport.”