A technical issue with UK air traffic control systems caused significant disruption to departing flights at major airports across the United Kingdom on Monday. National Air Traffic Services (NATS) reported the problem, which restricted the flow of aircraft, leading to delays and cancellations. Airports affected included those across England, Scotland, and Wales. Passengers faced considerable uncertainty as airlines worked to reschedule flights and manage the backlog. NATS stated they were working to resolve the issue as quickly as possible, but warned of continued disruption throughout the day. The incident prompted investigations into the cause of the technical failure and its potential impact on the UK's aviation infrastructure.