I'd have to say from what I've seen the UKMO is over playing the Atlantic return, think the GFS is better and more realistic, the Meto did mention this is in the 10 day trend. It'll definitely return to an Atlantic influence but I don't see any really mild air coming over the next week, maybe some of the low will be further South and maybe slide a bit but I don't see them barrelling across us like it's been showing.
I'd suggest it'll turn milder yes, but further North the cold air doesn't really move very far so you might find it produces a fair amount of snow up North, down South it'll be probably too mild for snow. But temperatures staying about average and below average across the North...certainly plenty of interest for snow lovers...oh and then there's Saturday night into Sunday *Said in my best Rob Mcelwee voice*