Over 400 flights were cancelled across the **UK** on Tuesday, September 8, due to a significant technical issue with **NATS**, the nation’s air-traffic-control system. The disruptions impacted travel plans for thousands of passengers departing from and arriving at **UK** airports. **NATS** reported the problem caused air traffic flow restrictions, leading to widespread cancellations and delays. Authorities are working to resolve the issue and restore normal operations as quickly as possible, but warned further disruption is possible. The glitch has sparked criticism and raised questions about the resilience of the **UK**’s air traffic infrastructure. Passengers are advised to check with their airlines for the latest updates on their flights. Investigations are underway to determine the root cause of the technical fault.