UK airports disruption: We should have been told the exact issue by now, says expert

Departures have resumed at UK airports after a "technical issue" with air traffic control grounded flights, with Heathrow, Gatwick, and Edinburgh all reporting disruption and delays ongoing.

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Paste BN spoke to an aviation expert who said it shouldn't be taking this long for NATS to reveal the cause of the issue that grounded flights.
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