London's Heathrow Airport is in chaos tonight after a 'catastrophic' digital glitch crippled its air traffic control systems, grounding all flights for over an hour. Sources close to the situation confirm the failure struck at precisely 18:42 GMT, sending ripple effects across global aviation networks. This is a developing story with immediate impact on thousands of passengers.

The glitch, described by an anonymous air traffic controller as 'unprecedented in my 20-year career,' caused the complete loss of radar and communication systems in the airport's control tower. Controllers were forced to switch to manual backup systems, but the transition was fraught with delays. 'We were literally using pen and paper to track aircraft positions,' the controller told The British Wire. 'It was a nightmare.'

Within minutes, Heathrow issued a ground stop, halting all departures and diverting incoming flights to alternative airports including Gatwick, Manchester, and Paris Charles de Gaulle. British Airways confirmed six of its long-haul flights were rerouted, with one source at the airline calling it 'logistical hell.'

Transport Secretary Sarah Dickson was reportedly briefed at 19:15 and is expected to address Parliament tomorrow morning. 'This is a critical failure of national infrastructure,' said aviation expert Dr. Alistair Finch of Cranfield University. 'If the backup systems didn't kick in properly, we need to ask why. This could have led to a mid-air collision.'

NatAir, the private company operating UK air traffic control, has remained silent, issuing only a terse statement: 'We are investigating a technical issue. Safety is our priority.' But insiders reveal the glitch may be linked to a software update pushed earlier today. 'The systems were upgraded at 14:00 hours. Something went wrong,' a NatAir engineer leaked.

Passengers at Heathrow described scenes of confusion. 'It's bedlam. No one knows anything,' said stranded traveller Emma Whitfield, 34, from Manchester. 'We were about to board for New York, then they just closed everything.' By 20:00, some departures resumed, but delays of up to four hours are expected to ripple through the evening.

The glitch has reignited fears over the fragility of digital infrastructure. 'We've centralised too much control in software without adequate human oversight,' warned Finch. 'This is a wake-up call.' The British Wire will continue to monitor this developing story as details emerge.