Heathrow cancels flights due to thick fog
Dozens of flights have been cancelled at Heathrow airport due to thick fog.
A spokeswoman for Britain's busiest airport said the weather had forced the cancellation of about 50 flights and advised passengers caught up in the disruption to contact their airlines.
"The fog has been quite bad today," she said.
"We've had to cancel flights to keep up with the schedule. Passengers are advised to check with their airlines."
The fog is due to clear by 3pm and no further cancellations or delays are expected today, the Heathrow spokeswoman said.
Passenger Ed Drewett wrote on Twitter: "Stuck on the ground at Dublin due to fog at Heathrow. Gonna miss my flight to LA. Ooh I do love a drama."
Another Twitter user said: "So fog at Heathrow means cancelled flight and 1 extra night in sunny Palma. Thank you @britishairways and @Iberia for looking after us."
The disruption at Heathrow comes on the last day of the school half-term holidays for much of the country.
Paul Knightley, a weather forecaster at MeteoGroup, said: "There is fog and low cloud around from Essex to Devon, through parts of the West Midlands, up to Shropshire and Worcestershire and Merseyside.
"The t hick fog is expected to return again tonight so Heathrow could be pretty foggy again tomorrow morning."
The Met Office issued a severe weather warning for fog across England and Wales.
It said: "Areas of fog are expected to form during Sunday night becoming widespread and dense in places by Monday morning.
"Travel may be impacted by poor visibility, with some minor disruption expected."
The chief forecaster added: "A slack, moist airmass lying across much of England will allow fog to readily form again on Sunday night, reducing visibility to less than 100m at times. Fog will slowly lift and clear from many places through Monday."
Sky News presenter Eamonn Holmes said the fog meant his flight from Belfast to Heathrow was cancelled.
He tweeted: "Cancelled on @British_Airways then @flybe. Everything else full. Not getting out of Belfast. Ah well there are worse things in life.#LondonFog."