Volcanic ash cloud: Could it get worse?
24 May 2011 Last updated at 19:00 BST
Thousands of passengers have had their flights cancelled because of drifting ash from an Icelandic volcano.
Airports affected include Londonderry, Glasgow, Edinburgh, Prestwick, Durham Tees Valley, Newcastle and Carlisle, air traffic services company Nats said.
Transport Secretary Philip Hammond, who led the Cobra talks, said although there would be widespread disruption for Scottish airports, it was unlikely to last long.
David Shukman reports.