Don't think I would have chosen this for myself, but someone lent it to me. I read it on the train from Birmingham to Barnstaple and couldn't put it down. I finished it in the station cafe running the risk that I'd be late for an important meeting.
It's immensely readable! No padding, no long boring descriptions of time and place, yet atmosphere is very strongly conveyed, you're bang there in mid 1940's austerity Brum - you can almost smell it. There's a lot going on but things never get confusing; you don't have to keep trawling back. Some bits can have you on the edge of your seat. It's very moving, even tear-jerking here and there, but above all it's extremely funny - laugh out loud funny. I've ordered the prequel. Get yourself both!