Jonathan O'Brien is the CEO of Positive Purchasing Ltd, the international purchasing consultancy and training provider. With over twenty five years' experience working in purchasing, he has worked all over the world to help global organizations increase their purchasing capability through training, education and working directly with practitioners and executive teams to drive in the adoption of category management and other strategic purchasing methodologies. He is the author of Category Management in Purchasing and Negotiation for Purchasing Professionals (also published by Kogan Page). Less