The yellow warning which warns of “hazardous driving conditions” is expected to last until 11am this morning. The initial area has been expanded stretching from Newcastle upon Tyne and deep into the South East of England.
In an update, the Met Office warned of “Impaired visibility leading to hazardous driving conditions in places, and probable slower journey times especially by road.
“Delays to bus and train services are possible.
“There is a chance of delays or cancellations to flights.”
Richard Miles, a meteorologist from the Met Office told Express.co.uk the country should expect fog on most nights for over the next week.
He said: “There is a chance of fog most nights for the next few days, which might be slow to clear in some areas.”
John Gresiak, a senior forecaster with Accuweather, echoed the Met Office.
He told Express.co.uk: “The weather pattern remains rather quiet around the UK and for that matter most all of western Europe.
“With light winds and mild, moist air over the region, areas of fog and low clouds have been an issue in some places, especially during overnight and morning hours.
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