That was a very thoughtful review of the series by BlunderGuts. It should help people to decide whether to watch it.
I totally agree with the opinion that Jane Horrocks' episode was excellent; you could really feel for her situation. Likewise episode 5 with David Morissey caught in an awkward situation with an obsessive girl.
I didn't find the shortness of the episodes a problem. What I did feel was that the acting was excellent including Lacy Turner from Eastenders. There wasn't a great deal of story but I like that as you can concentrate on the characters, and to me it looked so real and not melodramatic at all.
So when you can feel for the characters and picture the position they are in, it's impressive. If I hadn't been told I would not have been able to tell that it was improvised.
If you like Mike Leigh, watch these episodes. I was not impressed by several critics who were so rather negative.