I went to this for Benedict in the first place, but when I finished I found that the story was more exciting. Very good plot, every things were quite confusing in the first few episodes, and I didn't understand the whole thing until the last one. There could be some improvements in the way they delivered the story to make it more clear and intense. You need to be patient to wait for 2 or 3 episodes to get an idea of what's going on because they've been laying too much clues around and not connecting them till the last sec. They also spent quite a few shots on drawing the social background. But towards the end it was irresistible to see where the characters will end up despite their struggles. And at the last few scenes I did get horrid, thrilling feelings that the story tried to create. It made me so disgusted about what's happening in that fictional world and that's why I found this series quite nice.
The cast was good. All actors/actresses were delivering fantastic performances. (And I am more than happy to see what a brilliant job that Benedict did in this).
Overall, don't expect this show will be witty or delighting or full of fun. It followed the George Orwell "1984" and in a sense, dull, but still alarming. In my view it was unnecessarily lengthy, but not intolerable. So if you are after some kind of serious drama on political conspiracies, this one worth a try.