No snow here that I could see, but I may just not have got up early enough.
I think people are being rather uncharitable about the weather warning, given that the accompanying text read: "East Anglia and parts of Kent and Sussex look most at risk of seeing snow for longest. 1-3 cm of snow may fall fairly widely over these areas with 5-10 cm possible in places, mostly over parts of East Anglia and any higher ground." Many of those complaining seem to have been outside the areas stated as being at highest risk.
Of course the colour of the warning reflects both the likelihood of it happening and the severity if it does, and the likelihood very rarely reaches the highest of the four categories and doesn't need to for either an amber or a yellow warning. Since the idea of warnings is to alert people to possible disruption and hazards, it would be a mistake only to issue them for things that were almost certain to happen and thereby fail to warn for a lot of events that actually occurred though the probability been say only 50% or even 30%. And we've all seen the fuss that the media kick up when some event occurred that there wasn't a warning for. This time, things were clearly very much on a knife edge, and a tiny change in temperature or humiodity could have made a big difference to the amount of snow.