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Abstract
This paper argues that the diversity of a region's knowledge stock and its balance between knowledge-based manufacturing and services are both important determinants of variations in the rate of new business formation across spatial areas. An empirical study of new firm formation across 408 local unitary authorities and districts in Great Britain over the period 2001–2007 is presented, taking explicit account of the interactions amongst spatial units through an econometric modelling procedure involving maximum likelihood spatial models and alternative spatial weighing matrices. The results indicate that both related and unrelated knowledge diversity have a positive impact on the rate of business formation, whilst aggregate local economy-wide industrial and ethnic diversity has no impact; the division of the knowledge stock between services and manufacturing is also significant, with services having a positive impact on new business formation in contrast to a negative impact for high-technology manufacturing. There is also some support for the view that low wages and economic inactivity constrain new business formation, whilst a competitive regional environment has a positive impact. The results imply that polices should be aimed at creating a diverse set of knowledge-based industries rather than specialization in a narrow range.