The extreme weather conditions – which caused 10% of flights from Heathrow to be cancelled on Monday – are expected to clear by Tuesday afternoon

Forecasters have warned that the thick fog which has been causing disruption at UK airports is likely to return for a third day on Tuesday.

A total of 129 flights – equivalent to 10% of departures – were cancelled at Heathrow airport on Monday due to air traffic restrictions caused by low visibility.

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Source: Guardian Environment