I was very disappointed in this book. I had really enjoyed
Crack House an excellent book which was exciting, informative, had a narrative drive and really reflected the author's front-line role in the Met.
In contrast I found this book only sporadically interesting and definitely got the impression that the author was struggling to find something dramatic to say about a role (surveillance) which is obviously extremely important but yet often tedious. As well as lacking the excitement of his drug squad days it also lacks the `whole picture' involvement that one might get from an investigator's tale.
I found that the attempts to create artificial drama really got on my nerves too - training, random encounters in the street etc all got the James Bond treatment, which probably tells you as much about the co-author/publisher as Harry.
I wanted to like this book, if only out of respect for the work being done by SO15, but ultimately I'd not bother with it.