Good ideas, well paced and well plotted, with interesting and engaging characters.
But it needs a thorough editing; I felt like I was reading an unpublished draft. The common banter style made the characters tend to blur together, and really, could they not sometimes just get on with their bloody jobs instead of making with the constant sexual jokes & innuendos? And the author very badly needed to consult someone actually British for the voice of the supposedly British characters - these are teeth-gratingly bad at times. (What is Oye even supposed to mean? Oy? Oi? Aye? What kind of English are we even talking about? Seems to veer randomly cockney & posh.)
I got the book free in exchange for a review; I hope this isn't so harsh as to be discouraging. There's a lot of good in it; it just needs some balancing and tweaking.