International Conference on Compressors and their Systems 2023 will take place on the 11-13 of September 2023 at the City, University of London, London, UK. The programme will be more cohesive this year by the inclusion of industry sessions on high-importance topics in addition to the traditional keynote addresses, research and technical papers, podium papers and discussions. This will provide a platform to identify current challenges and provide the essential content and direction to shape future research.