DarkSide is an international collaboration developing the next generation of dark matter detection experiments, with the DarkSide-20k detector currently under construction at the Gran Sasso National Laboratory in Italy. Building on the success of the earlier DarkSide-50 experiment, the collaboration is preparing a highly sensitive liquid argon detector designed to search for evidence of dark matter particles and explore one of the most important unanswered questions in fundamental physics. Through IRIS, UK researchers use computing and data infrastructure to support detector simulation, software development, workflow testing and the analysis of prototype and commissioning datasets. These activities help prepare the scientific and technical foundations required for future DarkSide-20k operations, while enabling the UK community to contribute to the development of advanced data-processing and analysis techniques for large-scale dark matter experiments