00z GFS sticks with the HP dominated theme, in FI with better clustering of the ens pressure wise later on suggesting it's a strong signal at the moment (along with yesterdays MetO update which was very confident of a high pressure dominated spell).
As Neil mentions where the expected block sets up will make a big difference to temps, although as we're still early enough in the year if the block is stable enough milder 850s above won't mean much if the air stagnates at the surface.
https://www.theweatheroutlook.com/twodata/chart.aspx?chart=/charts/gefs/gefsensmslpLondon.png?cb=916
ECM is a bit nothing ish for it's run - some milder stuff, some colder stuff (including the colder blip for Scotland on 25th/26th which has been signalled for a while now). It's not a screaming atlantic assault though and may well end up where GFS FI goes.
Milder and unsettled for a week or so after the cold gets washed away this weekend (albeit a snowy wash for some) then a decent chance of some settled weather later on. TBH this time of year a block giving us a long fetch southerly would be a nice thing, as would one giving a long fetch easterly. I'd prefer the latter but the former would be acceptable too
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