Think for me it it was Xmas eve 1995, a polar low bringing fierce winds, heavy snow, ball lightning etc. The ferocity of the storm took most by surprise, and to see such a blizzard in the halogen lights was spectacular. We had friends round that evening, and they had to abandon their car in our drive with 4' drifts all the way to the main road. Some of the more exposed routes had huge drifts that took several days for snowblowers to clear. Our friends car was eventually dug out by their son on a tractor 3 days later! The event was followed by showers for several days, then very frosty for another few days.