Just rain here, thankfully.
It's been raining in London all day so far, any snow that does fall will just turn into immediate slush.
I'd love to be proved wrong but I'd put money on no real snow settling here.

Raining more heavily now in Essex, but still 6C. Heading back home towards Gatwick now, but I think it'll be sleet (if that) later on...
80 flights cancelled at Gatwick now apparently...
BBC Weather forecast heavy rain from 12-3 here...couple of light showers.
Forecast heavy snow from 3-5...probably sleet at worst.