Flights at UK airports grounded by air traffic control 'technical failure' that's cancelled 425 flights and will last for hours
Thousands of holidaymakers, including at Heathrow and Gatwick , are facing hours of delays, with disruption expected to last until at least 9pm this evening.
Black News 
Thousands of holidaymakers, including at Heathrow and Gatwick , are facing hours of delays, with disruption expected to last until at least 9pm this evening.
