Last year, when I was still living in Charlwood in Surrey, the BftE was a shoe-in for really heavy snow. When you get a good easterly in that area you can end up with an easy 6 inches or more of snow. We had some heavy snow which all melted very quickly, despite most areas around us getting loads and it stayed. The most interesting stuff we got was frozen rain.
As an aside, when I was in Epsom, I think it was Jan 2009, we had the heaviest snowfall in the country. About 13" over about 24 hours. Again, easterly.
My point being that neither of these 2 weather patterns were forecast. Charlwood was supposed to get a right dumping and Epsom was to get a couple of inches. Anything can change at the last minute. The best weather forecasting is the mk1 eyeball!