London City Airport has cancelled dozens of flights after the capital was shrouded in fog on Tuesday morning.
The Evening Standard reports that the airport in east London has cancelled 43 arrivals and departures by 9am, with 18 flights experiencing delays.
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Flights have also been delayed at Gatwick and Stansted due to low visibility.
London City Airport is keeping passengers updated on social media and suggests to check with the airline directly for flight information.
The Daily Mail reports that passengers have also been taking to Twitter to bemoan the situation. One wrote: "Great, so much for my flight from London City Airport this morning."
The cancellations come after the Met Office issued a warning for fog in the south east on Monday night.
The Met Office forecast for London suggests that fog will persist throughout the day but that it should lift into Wednesday.
It reads: "Tuesday is murky and rather cold, with extensive low cloud, mist and fog, locally freezing fog. Given light winds, these conditions may persist in many areas throughout the day, with only limited brighter intervals developing as temperatures languish in single figures.
"On Tuesday night, mist and fog should reform widely to give another murky night, although it will be much milder than of late, with temperatures reaching double figures in places.
"On Wednesday, it will be mild but grey, however the developing breeze should progressively lift mist and fog, eventually developing some breaks to perhaps give some late bright or sunny intervals, mainly in the south. Temperatures could reach 12 °C."