An entertaining, somewhat rambling book about the Ordnance Survey. There's plenty of good stuff in here; not much structure, but that's OK, since it's much more interesting to see what the author thinks is important.
A couple of quibbles: more pictures of the maps he's describing would have been nice (not all of us have a complete set of Landrangers to hand), and the frequent digs at other kinds of geeks seem a little unfair given the title!
Thanks to Joe for lending me this.
ISBN 9780007300846.