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International audienceThe network paradigm has been highly influential in spatial analysis in the globalisation era. As economies across the world have become increasingly integrated, so-called global cities have come to play a growing role as central nodes in the networked global economy. The idea that a city’s position in global networks benefits its economic performance has resulted in a competitive policy focus on promoting the economic growth of cities by improving their network connectivity. However, in spite of the attention being given to boosting city connectivity little is known about whether this directly translates to improved city economic performance and, if so, how well connected a city needs to be in order to benefit from this. In this paper we test the relationship between network connectivity and economic performance between 2000 and 2008 for cities with over 500,000 inhabitants in Europe and the USA to inform European policy

The literature on global and world cities points towards a growing concentration of advanced producer services (APS) firms in a restricted number of cities, who execute strategic command and control functions over globalised capitalism. However, relatively little attention has been paid to how APS are located within such cities. We argue that APS locations within cities are related to two partly independent processes: localisation economies and centralisation dynamics, which result in patterns of concentration and centrality superimposed on socio-historical constructions of urban space. Utilising data from a national company register, we analyse the local insertion of APS firms in the Brussels' metropolitan area in light of these two processes. The outcome reveals that only some of Brussels' APS firms are concentrated and central, which we suggest to be the most strategic and internationalised APS functions.

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