As a history of London, Ackroyd's shifting perspective of the Metropolis lays itself open to criticism from the professional historian. Instead of nailing the City down to a time-line, Ackroyd keeps his structure fluid, his perspective shifting in time and place like the City itself. Grouping his mass of material under headings as diverse as "weather", "murder", "children" etc. allows him to take us back and forth in time within the scope of each chapter. It is the ideal format for his portrait of London as a timeless entity, that encompasses past , present and future and displays each unceasingly. If you like your history caught on the wing, graphic and alive, then I can recommend this book. Peter Ackroyd is more poet than historian, but to capture the feel of a city and its people, to make you smell the medieval, victorian and restoration streets, the poet is the man for the job. He shows us the histories of the hooligan and the aristocrat, bank clerk and psychopath, all detailed with compassion and style. His facts are anecdotal and fascinating, the use of four-letter words down the centuries, where you could get a cheap dinner 300 years ago and who you were likely to meet. An academic history of London it isnt, as a tour of London its the best you'll get.