Leroy is as a Professor of Management at the University of Exeter Business School. His main research interests are strategic leadership, management practices, social network analysis, behavioural operational research and large group decision-making. He has worked with a range of clients, including the Department of Health, local health authorities, health trusts, the BBC and the voluntary sector in both the UK and abroad. He has published over a hundred papers in journals such as The Leadership Quarterly, Journals of Management Studies, British Journal of Management; Organization Studies, Human Resource Management and European Journal of OR.