Coronavirus

[Witton Park]

Looks to me as though there is a local issue in the Blackburn area which isn't apparent elsewhere.
Which raises the question: is it to do with ethnicity, or something else?

It's apparent elsewhere.

Leicester outside of London has the largest Asian ethnicity and was first in to 2nd lockdown and is still in Tier 2 almost 4 months later. But outside of Leicester is tier 1 and much lower rates.