That's true. I've driven twice there after a snowfall, it's a nightmare. There's several problems; and it is worth nothing if renting and it snows just stay at the hotel if you can. First, British drivers haven't a clue how to handle snow. They're either too fast (bad) or too slow (annoying). The windshield washer fluid and nozzles freeze (even with antifreeze added), so if there's dirt coming off the road it's hard to clear them. They melt the snow using deicing fluid sometimes. And there's about 4 snow plows for the entire country :-)

Still, keep calm and carry on . . .