Don't understand the negativity. The front will be over us for 4 or 5 hours near midnight, that is plenty of time for evaporative cooling to take hold.
Well I have been in Norwich for almost 4 years for University, and every year it is mostly just frosts and a few slushy deposits. Bar last year, it doesn't snow too often here.
It's fine, it's just hard to work out what someone in London means when they say 'high snow risk for the region'. Do they mean Southern England or East Anglia too?