Manage your expectations... it's average at best, but not the worst way to kill time. I really wanted to love this as I enjoy sci-if. I also like a good British production/drama, but it wasn't anything special and it was quite slow with very few lukewarm twists/decent moments of gripping drama thrown in sparingly. To be fair, most of the actors were good (namely Harry and some supporting roles), they performed well...after about three episodes it does get better, but just not great.
Just to clarify a couple of other things; someone compared this to the brilliance that is Sense 8. This is nothing like Sense 8. The storyline/plot is VERY different, context completely differs, the scenery and cinematography are also very different. This is more static, less sensual, less versatile, has a lot less drama, suspense and action. It's based in one or two countries max and there's minimal cultural crossover. Sense 8 was a feast for the eyes and mind so I wouldn't want anyone to get their hopes up. Anyway, this is also not as realistic as some are claiming. It might be more so than an assumed glossy, soapy American produced version, but a lot of the interactions between young people are far from realistic. A lot about the runaways and how they run, the hospital, club scenes in Shoreditch how they survive, etc...does not make sense and is far from realistic or believable. I understand that we can be young and dumb, but they often take dumb to unrealistic levels.