Increasingly firms are moving away from the `closed innovation paradigm¿ in which most R&D is carried out in-house, in isolation and secrecy, to a more open way of working in which firms actively collaborate with other companies and institutions. Although this `open innovation¿ is receiving more attention in academic research, the existing literature is largely qualitative and focused on the practices of high-technology multi-national firms and generally ignores the work being carried out in this area by SMEs. Using a combination of theory and cutting edge empirical (quantitative) investigation, Pooran Wynarczyk strives to address this major gap in current literature.