? Darren alias GMS says a prolonged mild spell is likely ,whilst Will
reckons
it could be record breaking cold..... unequivocal wouldn't one say ?.
Heh, I'm going by what the NWP is saying (and with an admitted emphasis on
the south at that, as we don't - to my knowledge - get to see the ECM
ensembles for anywhere else in the UK).

The models all seem to be very consistent in modelling a strong and
relatively zonal jet over the Atlantic at around our latitude, which as far
as the models are concerned will bring a mild spell of anywhere from 5 to 10
days. Beyond that there's the usual scatter, but it's worth mentioning that
the operational GFS is very keen to restore a cold block by the end of its
run (16 days) and has been for a few runs now. I normally pay little
attention that far out (the resolution then is tiny and the snowball effect
means any errors multiply exponentially) but it's worth keeping an eye on.

The ECM ensembles for London show a mild spell, followed by slightly less
mild weather out to the end of the 15-day run; by then it shows the sort of
weather that's close to average by day but with night time temperatures a
few degrees above average. That's the sort of thing that though technically
mild wouldn't be called it by most!

I do wonder if this winter has a sting in the tail though, there's plenty of
time yet for cold weather to return!