“…The concept of regional clustering has secured a prominent position in this literature, and has proved to be influential in the policy arena (Department of the Environment, Transport and the Regions [DETR] 2000, Organisation for Economic Co-operation and Development [OECD] 2001). This concept owes much to the Marshallian industrial district and many recent elaborations, including the work of Brusco (1982), Piore and Sabel (1984), Amin and Thrift (1992) and Storper (1997). The business scholar, Michael Porter has also drawn on this literature, integrating it with his earlier work on competitive advantage to create a popular, practitioner-oriented 'cluster theory' (Porter 1998(Porter , 2000.…”