The Public Health England report says racism may be a factor in increased risks for ethnic minorities.
Well before this current epidemic it was known that Europeans in particular could be in possession a mutant gene in their white blood cells called CCR5-Delta32. It is thought that this gene has been around for 2000 years and has supplied immunity or lesser effect to some of the medieval plagues and right up to recently HIV/AIDS. If this mutant gene has been having the same effect with the current Covid-19 it would explain why some people have been taken out in days while others have had no discernible ill effects.
This mutant gene has never been detected in people from Eastern Asia, sub-Saharan Africa nor American Indians. The first two of these three groups are precisely the ones that have suffered worst at the hands of covid-19, surely not a coincidence.