Ok, tomorrow:
Easier to chop the UK up with this forecast!
Scotland: Snow moving in from the west from the morning onwards. However western coastal counties will probably remain as rain. Turning to sleet over lower ground later, but perhaps a fair bit of snow over the hills by the end of the day.
Wales: rain moving in from the west around lunchtime. Turning to snow over hills. Turning to rain later, especially over lower ground.
England:Early afternoon heavy snow looks set to move into the NW and the Midlands, turning to sleet or rain perhaps later. As the snow moves across England, heavy snow becomes more of a risk, especially over hilly ground. The Pennines i think will be a particular risk area for problems. The south of England I think will mostly suffer from heavy rain from this system. Later on (evening/night time) , heavy snow for the eastern side of England before it peters out,