This event has been transmuted into “The Gold,” an involving British drama premiering here Sunday on PBS. Critiques of British class structure and bad actors within the police department are raised high enough to be impossible to miss. The detectives have a computer, but only Brightwell has an idea of what it’s for or how to use it. A tracking device, apparently the only one in all of British law enforcement, has to be imported from Belfast (and sneakily at that). And the remodeling of East London into a gentrified glass forest, a minor plot point, has only just begun.
