United Kingdom's National Air Traffic Services (NATS) stated on Monday that the technical issues that previously affected flights in the country are "remedied."
"We are now working closely with airlines and airports to manage the flights affected as efficiently as possible. Our engineers will be carefully monitoring the system's performance as we return to normal operations," the NATS said.
According to the body, flight planning affected the system's ability to automatically process plans, which meant that flight plans had to be processed manually, hence the need to restrict traffic flow.
