As this man walked past me I heard him bark into his mobile phone ‘I could pay the mortgate on a 5-bedroom farm in Devon for what I’m paying to rent in London’ (the photograph was taken outside the Temple Church, made famous by Dan Brown’s Da Vinci Code, in the Inns of Court). Joel Garreau, in Edge City: Life on the New Frontier, 1991, suggested that the South of England from Dover to Bristol is effectively one large Edge City. That city is pushing into the West Country, with steep increases in property prices. The internet allows skilled residents to particpate in the knowledge economy while enjoying a peaceful landscape. This was, of course, Ebenezer Howard’s Garden City dream. Is the country made more or less sustainable when knowledge workers move out of London?