This is not a substitute for compulsory subject course text books, or your own session notes, but it can save you stressing over last minute revision notes, because there's often not enough time to do your own properly as you go along.
The diagrams are clear and checklists and summaries comprehensive.
The only negatives are the Company Law Procedure table, which you will need to extend and expand, and the Tax section, which is a bit confusing.
Having said that, I thank this book for getting me a distinction in my compulsories. Buy it, take it to a print shop and get them to unbind and hole-punch it for you, add it to your files to take into your open-book exams.
Definitely worth the investment!