Bits of Essex are dodgy OP, because the centuries-strong community of whites (mostly) were pushed out of East End social housing by immigration & council house sales in the 90s and that’s where they flounced.
Families were broken up after 120 years of living in the same Victorian estates, businesses had to close, you name it.
Even the Labour Mayor took the (mostly white) Cockneys seriously and they had to do a public enquiry about why a community died so fast.
Having lived through it, it was a bit like shutting Brixton down overnight and replacing everyone with the population from
the Falkland Islands or similar.
I was at school with the Mayor! Only Claim to fame. Anyway, OP, unfortunately that’s why a few whites went wrong, and it wasn’t that long ago, just so you know.
So OP, while 99.9 per cent of people are normal in Essex, The There’s Always One Rule applies in the towns closest to London.
Colchester is really nice. Mixed race kids never faced racism in any school through entire schooling recently to my certain knowledge.