For the first 15 years of his career, Darrell held a number of positions at Rolls-Royce and was responsible for the conception, design, and validation of a range of new military aerospace products. Over the course of the last 25 years, Darrell has helped deliver over $6B in new product-derived value to clients in every industry and across over 50 countries, including serving as the spark behind a dozen successful spin-out companies. He is the author of over 1000 innovation-related papers, articles, patents, and innovation-related textbooks, the latest pair focusing on innovation in start-up enterprises and the soft-side of innovation. Over the years he has held Visiting Professorships at a range of different universities around the world. He is currently a Professor at the University of Buckingham in the UK.