Airline passengers are facing massive disruption across the UK after an ash cloud from a volcanic eruption in Iceland grounded planes.
The Air Traffic Control Service (Nats) said no flights would be allowed in or out of UK airspace from midday to 1800BST amid fears of engine damage.
The restrictions, in accordance with international civil aviation policy, were imposed after the Met Office warned ash could clog engines.
Liam Dutton from the BBC Weather Centre explains the Met Office information.
One-Minute World News 
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