I read this book last year when confined to bed for some time - only problem with a substantial hardback printed on good quality paper was summoning the energy to hold it and turn the pages!
As someone who'd only briefly worked in the bus industry, and that many decades ago, it was quite eye-opening. I was unsurprised, though,to see a few names I remembered from my time at London Transport, some of whom I'd actually worked with, featuring and those I can remember as being both nice and competent seem, on the whole, to come out of it well, in terms of both performance and, I hope, financially!
I will never agree that the bus services should have been contracted out to private companies, even though some of the arguments stand up to scrutiny, but, given the decision was made, we're now in a much better position than might have been, and certainly than the railway carve-up has gone.
On the general point of Capital Transport books, I don't believe they've ever published a duff or sub-standard book, and I've been a bookseller for over 30 years. Neither are they overpriced, unlike some of the competition! Occasionally one of their books can become very sort=after, like Ken Blacker's book on the RT which has fetched a three figure sum (or close to it) for several years now, principally because it's the definitive book on the type.
Adam Gordon books (I have a couple on London trams and trolleybuses) are also very good, though possibly a tad overpriced, and again look the part too.