
Thousands of passengers experienced chaos at Heathrow and other UK airports on 30 July 2025 after a radar failure in London's air traffic control zone grounded all departing flights.
The technical glitch, described as a 'major problem' by the UK's National Air Traffic Services (NATS), disrupted operations at Heathrow, Gatwick, Stansted, and smaller airports, leaving travellers stranded and summer holiday plans in disarray.