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."
More top news
Not the nicest of days ahead I'm afraid. Misty and murky to start with rain on the way!
The Conservative Party has been warned over its use of a telephone call centre to contact voters in the run-up to the general election.
A dry start to the night with mist and low cloud, but rain will push into the south by the early hours.