“…While the study of the geography of corporate control in national urban systems became unfashionable during the 1980s, in part reflecting the growing complexity of corporations and the economy (Walker, 1989) and in part the increasing focus on global centres of control (Friedmann, 1986), it is clear that corporate headquarters continue to play an important role in national urban systems (Hayward, 1996;Testa, 2006). The recent work of Taylor (2004Taylor ( , 2005Taylor ( , 2007 on world cities has shown how corporate activity is often channelled through global command centres into national systems (see also Bosman and de Smidt, 1993;Yeung et al, 2001;Taylor et al, 2009). At the same time, it is clear that, within large national systems, the spatial organisation of corporate headquarters plays a critical role in shaping local and regional development (Holloway and Wheeler, 1991;Chan et al, 1995;Carroll, 2001;Quark, 2007;Klier, 2006).…”