If you are a cartophile and/or are interested in British history, then this is a book for you.
The book consists of a series of short essays on particular features of London maps and/or the history of London as illustrated by maps. The topics are arranged chronologically and walk the reader through the entire history of the City and the greater metropolitan area. The earlier parts of the book are more map-oriented, while that latter parts of the book (particularly the 20th century sections) lean more toward straight history and are less map-oriented. Still, it was a wonderful read.