If you put a BaNES postcode into the gov.uk site for 'What tier am I in, it shows as Tier 2 and not changing. If you put a (say) Clevedon or Templecombe postcode into the same page, it tells you that the tier is changing soon. So, you can safely assume that BaNES will remain as Tier 2
That should have read ....."will remain as Tier 2 until Boris and Matt finally agree to lock down the whole country early in the New Year"

.....and the sooner that happens, the better.