I just started Episode 6 of Season 1. I have a lot to say about this show, and will add to this later. But I had to hit the pause button because there is one aspect of this show that is really starting to drive me mad.
Why, oh why, are Abby and her friends apparently absolutely allergic to doing ANYTHING in the interest of basic security? I understand that firearms are relatively rare in the U.K., but they still exist, and given the relatively few people left, it would not be hard to get your hands on a few. By this point, these folks have had their happy little home invaded enough times that they should certainly be thinking along these lines.
Even if one puts aside the firearm issue, how about reinforcing the windows and keeping the doors locked? How about blocking the road by felling a few trees so that people can't just drive up at will? How about laying in some homemade defenses (pipe bombs and such) on the upper floors, just in case? For that matter, how about a basic security lookout? Abby's idealistic but she's not stupid, and Ken and Tom sure as heck should know better.
Apparently the writers couldn't figure out enough ways to generate tension and suspense without making the main characters into perpetual sitting ducks...but couldn't they have at least made a token effort to convince us that these people's lack of concern about mustering some basic security isn't as completely and wholly absurd as its coming off?