Government Digital Service (GDS) and Department for Science, Innovation and Technology (DSIT) has published initial guidance on preparing government datasets for use in artificial intelligence applications. The guidance sets out four pillars of AI-ready data: technical optimisation, data and metadata quality, organisational and infrastructure context and legal, security and ethical compliance—intended to address longstanding issues such as siloed data, inconsistent documentation, insufficient metadata and risks associated with providing raw data without adequate quality or provenance information. The guidance includes an AI-ready data action plan and a self-assessment checklist to help public sector bodies assess whether datasets can responsibly support AI capabilities over time, with an emphasis on responsible data stewardship, lawful use, governance controls and sustained organisational readiness. It is intended that the framework be updated as the AI landscape evolves and with feedback invited to inform future revisions.