DaveH
Striker
This is the map of Covid tiers:per 100k there are some parts of London higher than the North East.
London has the lowest decrease also.
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There is an interactive map at:
They mostly match up. The exceptions are London with some darker blue areas that are in tier 2, where as neighbouring Kent is tier 3. However swale is very high so they may be creating a buffer zone around that.
There are a few counties (Suffolk and Oxfordshire I think) that have low rates and are tier 2.