I read the book 40 odd years ago as part of my English Literature course. Can't remember much of it, but recall enough to make some sense of this series, which is based on the book (from what I can recall and saw, I suspect its only loosely based on the book).
I thought it was entertaining in places - and after two episodes I thought it was going to be special. But it kind of lost its way really, which was a shame. I don't think there was enough (any?) real explanation of the world they are living in - if one hadn't read the book I think it wouldn't make much sense.
The overall series lacked any real depth (the story centred on three key characters) but there was no real sense of who was directing this highly controlled society from above - there was no real sense of menace. And, a bit like Westworld I got the feeling the writers were more intent on patting themselves on the back about how clever they were being, than on actually explaining to the audience what was going on.
The ending clearly left open for a second series though don't know if that is planned.
