Britain’s two busiest airports are to close shortly as a volcanic ash cloud drifts further south, threatening major disruption to many thousands of people.
A no-fly zone imposed by the Civil Aviation Authority will shut Heathrow, Gatwick and London City airports from 0100 BST until at least 0700 BST.
Flights will also be grounded in parts of Scotland and Northern Ireland.
Restrictions will be lifted in northern England, allowing Manchester, Liverpool and Leeds Bradford airports to re-open.
Prestwick Airport will also no longer be within the no-fly zone from 0100 BST, although a spokeswoman said it would not be receiving any flights for another 12 hours.
According to air traffic authority Nats, other airports facing closure on Monday morning include Farnborough, Shoreham, Biggin Hill, all airfields in Northern Ireland, Scottish Western Isles, Oban, Campbeltown, Caernarfon and Aberdeen.
It said Cardiff would remain open but operations may be limited due its proximity to the no-fly zone.
Flights in and out of Dublin, in the Irish Republic, are also grounded until at least noon.
The Department of Transport has warned restrictions are likely across different parts of the UK until at least Tuesday.
Travellers are being advised to check with their airline before leaving home.
Ash from the Eyjafjallajokull volcano has caused disruption to thousands of flights since April.
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