This document summarizes a workshop on investment appraisal practices in the UK Ministry of Defence (MOD). It discusses the importance of value for money in investment decisions and outlines MOD's roles in establishing investment appraisal policy and scrutinizing appraisals. The presentation notes that while appraisal quality is improving, challenges remain such as vague requirements, limited option consideration, and uncertain affordability. It suggests areas of focus could include improving training, guidance on requirements and options identification, addressing optimism bias, and exploring wider applications of appraisal evidence such as at the strategic planning level.