Redrawing the regions of the UK using Human communications Interactions

Do regional boundaries defined by governments respect the more natural ways that people interact across space? This paper proposes a novel, fine-grained approach to regional delineation, based on analyzing networks of billions of individual human transactions.

Fascinating piece of research: Published December 8, 2010
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0014248