I found this book in a thrift shop (Oxfam Books) and bought it for its images and overview of this period in ancient history.
The first thing that struck me though is why he didn't write more about the Iceni Tribe and the amazing Snettisham Hoard, in view of the fact that this book was published after it's discovery. That fact alone is pretty disappointing.
Also, I haven't read more than a few pages, but of the pages I did, I noticed he asks us to treat what the Romans wrote about the Celts 'with suspicion' as they were invaders etc. This was immediately after an account of 'wife sharing' among Celtic tribes. Wife sharing in ancient tribes was not uncommon and I have read about this 'solution' to a shortage of females as being part of the way of life in mountainous China, among other places. Child birth was very dangerous and took the lives of many women. The solution was to share a wife among a load of brothers and even the father.
I'll update this review when I finish the book. I am particularly interested to read about the illuminations in Celtic bibles.