Drive slowly. Don't accelerate sharply. Pull away in a low gear, so gear 2 rather than gear 1. Remember, your braking distance is virtually non existent if you stamp on the brakes.
If you are going up a hill, don't stop unless you really have to. What I mean is, if your car starts sliding, just drive slowly but do not brake and stop as you will find it hard to get going again. Of course if you are going to hit another vehicle then you will have to stop.
Follow the traffic in front of you and don't create your own lane on the motorway.
Your journey will take longer. Plan for that.
Take some water, your phone, a jumper or blanket.
Stick to main routes if possible. I did that one year and went around the M25 and on to the A40 to get to work. Roads were in fair condition, but no other traffic on the roads! It was excellent.
The last big bad snow that came down in the afternoon closed the M11 and the A1M. Took me 4 hours to do a 1 hour journey. But my mate got stuck as he left after me. He left work at 4pm, and got home at 8am. He was sat on the A1m all night long!