I watched it on the iplayer. I thought that the plot is very well written. If only the bad language could be toned down a bit, it would be more acceptable viewing for me. I see no need for that kind of dialogue, which adds nothing to the plot.
Despite my comment regarding the bad language, I shall watch the following episodes, because it is simply an entertaining, and, as you say, emmie, thoroughly engrossing drama.
much better than say Broadchurch which had rave reviews,
Sally Wainwright of Scott and Bailey, and Last Tango in Halifax, so has some pedigree, i will watch the rest, i did think it one of the better things on tv of late