Remember, this book was first published in 1995.
The first third of the book is great fun, full of a compelling and frightening near-future London. Given this was written in 1994-1995, it's an amazingly accurate dystopian conception. Alex is an interesting quasi-hero, and the accelerated divide between rich and poor is clearly shown.
A global climate disaster has already occurred as the story begins, horrific in its implications. The war between rich and poor, corporations and workers, is nicely imagined. And the gene engineering and nano-bots are firmly founded in hard science.
However, after the first third of the book, the narrative shifts to a very confusing perspective of all new, mostly non-human characters. The cruelty here is depressing, and the plot wanders around and around.
The last third of the book or so, some plot direction is restored, but quickly deteriorates into a repetitive random walk around war zones, concluding in a 30 page yawn sequence, and ending the book with a big "who cares". Very sad.
Given this is one of McAuley's first books, much can be forgiven, and the hard science attempts and good beginning pull this up to three stars.
I suggest you read my "updates" below. There are some fine quotes, and one exposition is very fine.
-- Partial quote --
"Daphoene, the huntress of the moon, the triple goddess of air, earth and the secret waters of death.
...
‘The Age of Reason was almost a fatal blow to the triple goddess, but in its ending is her new beginning. For the last century saw the deposition of the paternal God who was set on the throne of Zeus, which was once her throne. The Age of Theocracy in the West was already in decline when in our country Cromwell forcefully rejected the ceremonies that obscured the godhead from the common man. He couldn’t see that the Age of Reason, in which every man was entitled to read and interpret the scriptures, would bring about the death of the idea of God. The god of science and reason, Apollo, was raised up in His place, and at either side of Apollo were Pluto and Mercury. I worshipped Apollo and Mercury when I was young, but it is Pluto who is in the ascendant now. Pluto, the hoarder, god of the geezers and the babushkas, god of all the people who hide away in the ribbon arcologies and in virtuality, jealous of the young and denying death, for that would mean losing all they’ve accumulated."