A history and overview of the greatest city of the British Empire. What I liked were the inclusion of the real maps from the time, but improved over how they were presented in the India book.
There is even a brief description of some of the neighborhoods, Gentlemen's Clubs and important sites. Background on the Peelers is also included.
The book is an overview and doesn't go into great detail in any subject. Though it is not supposed to be a textbook or a history book, a little more would have been nice.
All in all though it is a fine book. Perfect for any Victorian game since the d20 content is minimal.
All the Imperial Age books are all well written and features art from the age, either public domain art and paintings as well as some original art. In all cases the art is very evocative of the time and very well done.
The books are all easy to read, with clean layout and font sizes. They can be printed with ease without killing your printer cartridge.