For this book, the author covers every branch line in England, Scotland and Wales, according to the following definition :-
A passenger-carrying railway, generally not more than 25 miles long, running from a mainline junction to a village, town or city terminus. Minor lines that connect places on mainlines are excluded, as are branches created as a result of partial closure of interconnecting or through routes. Freight-only lines are covered in a special features section.
All of that means that some lines that we might consider to branch lines are excluded. but given the volume of material already published by the author on secondary routes, I doubt if there is any such line in mainland Britain that he hasn't covered at least once. If there is, I suspect somebody will alert the author and he will do something about it at the next available opportunity :-)
As expected, there are various features throughout the book, interspersed between the pictures and articles about the branch lines, notably one about the lost line legacy of signs and other surviving relics. Those signs (or their replacements) for Station Road are likely to be around for many generations to come :-)
This book provides us with another excelleent selection of railway nostalgia, well up to the standard expected of the author.