An amber weather warning for snow showers has been made by the Met Office.
Snow showers will become widespread and heavier across Scotland, Northern Ireland and northern England during Wednesday evening and will continue through the night into Thursday morning.
Snow amounts will be very variable but over 5cm will accumulate at lower levels in places with over 15cm on high ground.
Strong and gusty winds will lead to drifting and blizzard conditions at times, especially over higher routes.
The public should be prepared for travel disruption and hazardous driving conditions. Windy and turning much colder with snow showers.