The UK Research and Innovation DARE UK (Data and Analytics Research Environments UK) programme has been established to design and deliver a coordinated and trustworthy national data research infrastructure to support research at scale for public good. DARE UK is a cross-domain programme – its scope covers all types of sensitive data, including data about education, health, the environment and much more. This report sets out the findings and recommendations so far from Phase 1 of the DARE UK programme – ‘Design and Dialogue’ – which began in July 2021 with the aim of establishing the key challenges across the data research landscape, and firsts steps on how to overcome them to better support data research at scale for the benefit of society. This was achieved via a programme of engagement with stakeholders from across the landscape including interviews, workshops and other discussions with researchers, technologists, the private sector, the public and more. DARE UK Phase 1 is led in partnership with Health Data Research UK (HDR UK) and ADR UK (Administrative Data Research UK).