OK. I'm episode 1 down and it seems quite racist. Almost everyone, and certainly every character of any relevance, in this show is black. Last time I was in London, there were plenty of white people, but not in this show. The white people in the show are token white people, i.e. they serve no purpose in furthering the story.
Maybe there's a reason for this. I'll keep watching. If I haven't been given a reason by episode 3, I'll quit it and assume the producers are racist.