Festive revellers across the Midlands are being offered cash rewards of up to £200 in return for reporting drink and drug drivers this Christmas.
West Midlands Police and the Central Motorway Police Group have launched the drink drive campaign.
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Fog patches and extensive low cloud at first will steadily lift and clear.
A murky start with mist and fog then gradually clearing, although some eastern coastal districts may remain cloudier.
Isolated showers should die out through the evening to leave a dry remainder of the night.