Peter Childs, FREng, is the Professorial Lead in Engineering Design and Innovation Design Engineering. He is Professor at Large, Co-Director of the Energy Futures Lab, and was Founding Head of the Dyson School of Design Engineering at Imperial College London. His general interests include creativity, innovation, design, fluid flow and heat transfer, energy and robotics. Prior to his current post at Imperial, he was director of the Rolls-Royce supported University Technology Centre for Aero-Thermal Systems, director of InQbate and professor at the University of Sussex. He has contributed to over 200 refereed journal and conference papers, and several books including the Handbook on Mechanical Design Engineering (Elsevier, 2013, 2019) as well as temperature measurements and rotating flow. He has been principal or co-investigator on contracts totaling over £100 million. He is Editor of the Journal of Power and Energy, Professor of Excellence at MD-H, Berlin, and Chairperson at BladeBUG Ltd and Founder Director and Chairperson at QBot Ltd. Dr Marc Masen is Reader in Tribology and Mechanical Engineering Design in the Department of Mechanical Engineering, Imperial College London. He is the Academic Lead in Mechanical Engineering Design. His expertise includes the response of materials to mechanical contact and interaction, with a special focus on materials showing non linear and complex behaviour; such as polymers, elastomers, greases, and biological tissue. He designs, builds, and adapts advanced tribometers to gain new insights into the behaviour of these materials. Within the Tribology research group, he collaborates closely with a range of companies, including SMEs and multinationals such as L'Oréal, Shell and SKF. He is the co-editor of the journal Biotribology and sits on the editorial board of Proceedings of the Institution of Mechanical Engineers Part J - Journal of Engineering Tribology. He teaches on a range of modules, including Mechanical Transmissions, focusing on machine elements such as shafts, gears, bearings and couplings.