A pretty solid spy series!

This series is simply brilliant, I watched all four seasons and I'm hooked. I love the story's context, the sets, the lighting, the cinematography, and the acting, which is superb from beginning to end. It's the kind of drama the UK was once famous for, and as for Gary Oldman, who plays the typical grumpy old man, words can't express how fantastic he is.

All four seasons are impressive, the best television drama I've seen in years, unmissable in every aspect, with brilliant characters and an incredible script. This is the best thing on TV right now and has been since the beginning.