This was due to an air traffic control issue at the National Air Traffic Services (NATS). ℹ️ Technical issue at SwanwickOur systems are fully operational and air traffic capacity is returning to normal. (1/2) https://t.co/69ftwzLeSK pic.twitter.com/KKDercVfqa — NATS (@NATS) July 30, 2025In a statement, NATS said: "Our engineers have now restored the system that was affected this afternoon. The issue that caused disruption today was detected at the NATS Swanwick air traffic control centre. At the time of writing, NATS has not confirmed what caused the issue with its air traffic control system.

Source: The Times July 31, 2025 04:30 UTC