Turning cold, innit?
A block currently over Scandinavia/West Russia is going to split, with one lobe retrogressing westwards toward Greenland (the other lobe sinking ESE'wards toward the '-stan' republics)
The block to out N/NW becomes established and stable. The Jetstream - already looking weak - is displaced well southwards
Likely to be cold and dry in these parts for at least the next week (probably longer), then after that the detail is hard to nail. Still probably cold as we get close the Xmas. Unless some frontal feature pops up (models can't accurately spot these more than a few days out), snow is likely to be confined mostly to the eastern side of the UK along with northern Scotland more generally.
Here's the Met Office update from today:
Wednesday 7 Dec - Friday 16 Dec
There is reasonable confidence that temperatures will remain below average, and it looks like turning even colder from Wednesday. Showers will fall increasingly as snow in the north, even to lower levels at times with notable accumulations over the Scottish mountains. There is a low risk in the far southwest, of a more prolonged spell of rain, which would turn to snow over the moors, but this is far from certain. The best of the clear or sunny spells looks most likely in the west, though this could lead to some hard night frosts. Towards mid-month, the signal for below average temperatures weakens with hints of milder, wetter conditions pushing in from the southwest - though any such features could be preceded by a period of hill snow.
Updated: 14:00 (UTC) on Fri 2 Dec 2022
