The Decision Support Unit (DSU) was established in 2002 through a collaboration between UK universities to provide research and training support to NICE's technology appraisal program. The DSU conducts appraisal-specific work on 7-10 appraisals annually, involving rapid evaluation and modeling expertise. It also leads methods development through guidance documents, workshops, and research on topics like evidence synthesis, utilities, and uncertainty analysis. The DSU aims to facilitate methods discussions between NICE and industry and improve approaches to health technology assessment.