Not the easiest book to use for a reference, but all the information is there! But then when have you ever looked through a book of regulations of anything, and found it simple!?
This is the essential book for anyone involved with plumbing and associated works, if you're an old hand at it or just learning the trade at college! This is the book you have to go by, so you cannot really argue with that point!
The layout is quite clean and well presented, it just seems to be worded in an unneccessarily complicated way (but then, like I said, that seems to be the way books of this type are written!).
At the end of the day, a very useful (if not essential) book to keep in the van with you.