Mark Bellis is the Director of Policy Research and Development for Public Health Wales. As police across the country prepare to crack down on drink-driving this Christmas, he urges people: "Moderate your alcohol intake - and remember your Christmas for good reasons, not bad ones."
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It is going to stay fine and dry through the night with light winds.
It is going to stay fine and dry throughout.
There have been four deaths on the M4 in just the last eight days following crashes between Swansea and Newport.