gritters were out and about across sussex yesterday - I passed/drove behind/got sprayed with grit several times as I was driving around.
as others have said, it was the poor visibility and the high winds which were causing the most problems, coupled of course with the most astonishing examples of bad driving.
In the morning, trying to get dd1 to school, it took us 2 hours to travel 15 miles. If dh and I hadn't been going on afterwards, we would have given pu and gone home. yes, it was snowing. but at that point it wasn't laying properly, and driving was fine, if a little caution was exercised. but we got stuck in jam after jam - nothing actually blocking the road, no accidents, just ridiculous tailbacks caused by people who cannot drive properly.
once we got through all that, we merrily drove around east and west sussex, and parts of surrey - it all started closing in again about 4pm, and the winds were really high at that point.