Snow began to fall on 29th November - second anniversary of Storm Arwen, which was the most destructive storm in this region for a century; and has continued being added to since.
It is not very deep snow, but it has persisted for five days so far; and is proper snow - covering every twig of every tree - and the leaves have not yet fallen from the oak in our garden; and thick enough for sledging and snowmen.
This is only the second time since 1977 that I can recall snow falling as early as November; but the last time was 2010 when there was a massive (for England) overnight snowfall of about 15 inches in mid-November - and then the temperature did not really get above freezing nor did the snow finally clear until February 2011.
Back in 2010-11, there was high barometric pressure settled over the British Isles, which kept the weather static; as sometimes happens here around the Solstices, and persists until the lengthening, or shortening, days break-up the weather pattern by the cross-quarter days (Candlemass or Lammas).
At present, however, the barometric pressure is only middling; signifying "Change" - so I don't at present suppose that this weather will last for months. But in Britain - who knows?