Nigel Halpern is Associate Professor in Air Transport and Tourism at Kristiania University College, Norway. Nigel is also Visiting Research Fellow with the School of Aviation at the University of New South Wales, Australia. He has previously worked at Molde University College, Norway; the Centre for Civil Aviation at London Metropolitan University, UK; the UK Department for Transport, Local Government and the Regions; the UK Civil Aviation Authority; and PGL Travel in the UK, France and Spain. Nigel teaches and conducts research and consultancy in air transport and tourism. He is co-author of the Routledge book Airport Marketing (2013). Anne Graham is Professor of Air Transport and Tourism Management at the University of Westminster, UK. Anne has been involved in air transport and tourism teaching, research and consultancy for over 30 years. She has a particular interest in airport management, economics and regulation, and air travel and tourism demand analysis. In addition to previously being Editor in Chief of the Journal of Air Transport Management for a number of years, Anne has published extensively in the field of air transport and tourism. She is author of the Routledge book Managing Airports: An International Perspective (4th edition, 2014) and co-author of Airport Marketing (2013) and Airport Finance and Investment in the Global Economy (2017).