I've had this on my TBR (to be read) pile for a while, and was happy to pick it up last week. A couple of afternoons on a quiet verandah, to the soundtrack of cicadas, paddocks being slashed and birdsong (assorted) and I finished it. It's snickering-funny in many places, and the author, Ben Aaronovitch, is enjoying himself immensely (a wee bit more than me, I think). Seems to really know his London.
I'm happy to have read it, and wouldn't mind reading the sequels...but won't be rushing out for them. (Lots of other stuff on the TBR pile...)
Props to the cover designer, using Stephen Walter's incredibly detailed work from his The Island: London series is masterly.