A military aircraft entering spurious flight data triggered the severe Nats air traffic control outage that grounded thousands of UK flights and sparked demands for leadership changes.

National Air Traffic Services chief Martin Rolfe is facing pressure to step down after a technical failure grounded more than 2,000 UK flights.

Nats chief executive Martin Rolfe is facing intense pressure to resign as UK airlines demand accountability following a major air traffic control technical failure.

A technical failure in the Nats flight processing system grounded hundreds of planes across UK airports, triggering massive delays and political scrutiny.