David Gardiner has a lifetime of practical experience as a business consultant in operation management while employed by IBM and Gardiner Consulting Group. He was a contract lecturer at the University of Auckland Business School, New Zealand, for 25 years and currently teaches under contract at Massey University, New Zealand.

Hendrik Reefke lectures across a variety of topics in supply chain management and is deputy director for the MSc in Logistics and Supply Chain Management at Cranfield University, School of Management, UK. His research has been published in internationally leading academic journals, refereed conferences and books.