The boss of Britain’s air traffic control service is facing calls to resign over what critics said was the latest in a string of failures under his watch.

Ryanair has called on the UK's air traffic control chief to step down following Wednesday's radar failure that caused travel chaos. A "radar-related" issue left thousands of travellers in limbo for over four hours - with National Air Traffic Services (Nats) revealing late on Wednesday that there was "no evidence that this was cyber-related".

Ryanair has called for Nats' chief executive Martin Rolfe to resign after the air traffic control fault on Wednesday. The airline claimed "no lessons have been learnt" since the August 2020 system outage.