I'll take a punt at 4.9c.
Mild until a frosty period around mid December, usual freezing fog in the prone areas where temps will remain at or just below 0, but no snow.
Change between Xmas Day and New years Day as the Atlantic wakes up and throws a front at the UK brining snow at the start. May stall for a while but would push through introducing mild wet weather for the New Year, mild and pretty dry also for the remainder of Jan.
It is Feb and late winter I see as potentially the main differece from the last few winters as I think something slong the lines of late Feb 2001 or Feb 2006 is probable.
Just my thoughts anyway.