This paper concerns the contribution made by entrepreneurial teams to the commercialisation of new ideas within the context of university spin-offs and will address two questions. Specifically the paper investigates how the capabilities of founding teams influence the performance of university spin-offs and how the social networks of these teams contribute to this process. The analysis of the capabilities and networks of founding teams is undertaken in the ‘creation’ phase before the establishment of the business and this is assessed against performance measures of each spin-off in the ‘growth’ phase, post establishment.