12:36PM, Monday 24 December 2018
A fog warning has been issued for the Royal Borough and Slough.
Between 3pm on Christmas Eve (today) and 11am Christmas Day (tomorrow), a yellow fog alert is in place for London and the south east, with freezing fog patches possible.
Windsor and Maidenhead, Slough and Bucks are all areas potentially affected by fog.
Journey times are expected to increase and delays to public transport are also likely, the Met Office says.
Not everywhere will see fog, but where it does form, the visibility may fall to around 50 metres.
Fog will thin and lift in some central areas of England overnight, but will be slow to clear on Christmas Day, persisting for much or all of the day in parts of eastern England.
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