This series comprises Ancillary Justice, Ancillary Sword and Ancillary Mercy which I will hereafter call A1, A2 and A3 to save time typing.
   A1 won the 2014 Hugo, Nebula and Archur C Clarke awards, the only book so far to have done so. It's very good, although I do have a couple of niggles which I will divulge at the end of this post.
   A2 is a worthy successor to A1, although not quite as gripping because by now we know a lot about the world Leckie has built, so there are fewer surprises.
  A3 in turn is a worthy successor to A2 although in my opinion it focuses way too much on personal relationships than is necessary to drive the plot.
   All three books build on a brilliantly devised universe, where spaceships are giant AIs almost human in character, which control the ships and hundreds of 'ancillaries', the nature of which I will refrain from saying here. There are tons of clever descriptions and unexpected plot twists. It's no surprise this is such a well-regarded trilogy, particularly A1. My reservations>
   Everyone in the book is referred to as 'she'. The reasons for this are given early in A1 but I am not convinced this helps the narrative.
   The author has two writing tics that an editor should have picked up on. The characters are forever 'gesturing' to indicate something or other without saying anything. Tediously often. And in dialogue we have 'she agreed' as a tag way too many times. But Don't let these grievances put you off reading such a brilliant story.