As someone who is studying criminology as well as media, I believe this show is worth the watch. Brilliant acting throughout from all, including the young lad who portrayed a brilliant representation of what Stephen Graham was trying to write.
To those saying it had no conclusion, they clearly were not paying attention. The conclusion to the show is left the way it is as a hint as to what Stephen was trying to write alongside the fact that this was not based off of one particular case, leading to the "unclear" ending (as not all cases end the same way, even when someone is guilty.)
10/10 Have recommended people to watch :)