Air traffic control company Nats said it is restricting the number of aircraft flying across the south of England and those taking off from airports due to technical problems at its Swanwick control centre in Hampshire.
More top news
The Tories know the NHS is a weak spot for them, so why did the Prime Minister choose to focus on the issue today?
David Cameron has admitted the General Election is on a "knife-edge" as he tried to woo voters with the promise of a "truly seven-day" NHS.
It's shaping up to be a windy weekend with spells of rain. However we will see some dry and bright spells too.