[Technical failure of the British air traffic control system caused a large number of flight cancellations] September 9th, the British air traffic control system experienced a technical failure on September 8 local time, causing flight operations at many airports in the UK to be severely affected. All London airports are now closed to flights until at least 11pm that night. It is reported that about 600 flights in the UK were canceled that day. London Heathrow is one of the worst affected airports. According to data from the flight tracking website FlightAware, as of 18:50 local time, 156 outbound flights from Heathrow Airport have been canceled and another 186 outbound flights have been delayed. British Airways is one of the airlines worst affected at the airport. (CCTV News)