Saïd Salhi is Emeritus Professor of Operational Research/Management Science at the University of Kent, UK, and former Head of the Management Science Group from 2008 to 2017. He was also the Founder and Director of the Centre on Logistics and Heuristic Optimization (CLHO) from 2008 to 2021. He is one of the four editors in chief for the Journal of the Operational Research Society (JORS). Prior to his appointment to Kent in 2005, Saïd was at the University of Birmingham in the School of Mathematics for 15 years and in his later years he acted as the Head of the Management Mathematics Group. John Boylan is Professor of Business Analytics, and former Head of the Department of Management Science at Lancaster University, UK. He currently serves as Director of the Lancaster Centre for Marketing Analytics and Forecasting, Director of the National Taught Course Centre for Operational Research (NATCOR) and President of the International Society for Inventory Research. He is one of the four editors in chief for the Journal of the Operational Research Society (JORS). Before joining Lancaster, he worked in industrial OR groups and served as Academic Dean at Buckinghamshire New University