I read this article and found it relatively interesting but I’d probably say that this history of Britain and our development would probably mean you need to at all City’s for this. Liverpool for example, built on slavery. Many mayors of liverpool during the 18th and 19th century were either traders or descendants of traders. I’m no Liverpool historian but is the liver bird on the badge taken from the liver building? At the docks, the docks that developed as a result of the slave trade, I wonder how far back into the Royal Liver Assurance Company you’d have to go before you found slave links. I don’t want to turn this into whataboutery and turn it into a Liverpool thing (don’t want them thinking they live rent free in our heads) it’s just a prominent example. You could say the same about Bristol?
It seems a bit odd to start looking at badges though, Arsenal’s cannon, Royal armouries at Woolwich, they had a role in subjugating people all over the world and it’s a weapon of war. Where do you draw the line?