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Heathrow and London City Airport flights disrupted by fog Heathrow and London City Airport flights disrupted by fog
(about 5 hours later)
Thick fog and ice is causing disruption to flights in and out of some airports.Thick fog and ice is causing disruption to flights in and out of some airports.
London's Heathrow Airport said more than 20 flights on Wednesday had been cancelled and further cancellations and delays were expected.London's Heathrow Airport said more than 20 flights on Wednesday had been cancelled and further cancellations and delays were expected.
The Met Office has issued a yellow warning of fog for parts of England and is advising people of reduced visibility and the risk of disruption.The Met Office has issued a yellow warning of fog for parts of England and is advising people of reduced visibility and the risk of disruption.
In the worst affected areas, visibility will be less than 100 metres, the Met Office said.In the worst affected areas, visibility will be less than 100 metres, the Met Office said.
The warning - covering the period until 11:00 GMT on Wednesday - warns of dense and freezing fog across much of central, eastern and north-west England, as well as London.The warning - covering the period until 11:00 GMT on Wednesday - warns of dense and freezing fog across much of central, eastern and north-west England, as well as London.
On Tuesday evening, a spokesman for Heathrow Airport said: "Some flights have been cancelled and some are being cancelled tomorrow morning because of fog. On Tuesday evening, a spokesman for Heathrow Airport said: "It's better to cancel flights when there's fog because you can't land as many planes per hour because you have to leave more space between the planes."
"It's better to cancel flights when there's fog because you can't land as many planes per hour because you have to leave more space between the planes." He said cancelling in advance helped airlines accommodate passengers on other flights.
Cancelled flights included scheduled trips to Warsaw, Nice, Stockholm, Aberdeen and several German cities.Cancelled flights included scheduled trips to Warsaw, Nice, Stockholm, Aberdeen and several German cities.
At London City Airport, at least 18 services were cancelled on Tuesday as temperatures fell below freezing.At London City Airport, at least 18 services were cancelled on Tuesday as temperatures fell below freezing.
Passengers have been advised to check with their airline before travelling to the airports.Passengers have been advised to check with their airline before travelling to the airports.
BBC London's meteorologist Peter Cockroft said temperatures would fall much further overnight, causing dense fog which would be slow to clear in the morning BBC London's meteorologist Peter Cockroft said the temperatures would fall much further overnight, meaning the dense fog would be slow to clear.