GFS 6z ens (London) have moved more towards a brief cooler blip post breakdown before milder air returns. The scatter is a touch hard to resolve so may not be wall to wall average/mild but will need to get a clearer signal.
ECM ens wise there's more scatter and looking at the individual members suggests it's a volatile pattern - mild/chilly/mild again with enough precip spikes to suggest it's in an unsettled flow. There are still a few members that have more prolonged chilly/cold air in place but these are in the minority.
As it stands I'd say unsettled is strongly favoured, with the greatest chance of mild air being in the south although brief chilly periods are possible even here. Pretty standard winter fare, how long it lasts if it verifies is the question.
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