Jonathan O'Brien is the CEO of Positive Purchasing Ltd, the international procurement and negotiation consultancy and training provider, and is based in Plymouth, UK. With over 30 years of experience, he has helped global organizations increase their purchasing capability through training, education and working directly with practitioners and executive teams. He is also the author of Category Management in Purchasing, Negotiation for Procurement and Supply Chain Professionals, Supplier Relationship Management and The Buyer's Toolkit, all published by Kogan Page.