This report examines the challenges in Life Cycle Assessments (LCAs) of reusable versus single-use packaging for takeaway, comparing two industry-commissioned studies with academic analysis. It highlights issues like low return rates, assumptions around washing and transport, and the impact of transparency on credibility. Key findings stress that suboptimal designs in reuse LCAs can skew results, underscoring the need for future-focused systems. The report advocates for realistic assumptions and robust data in evaluating reuse policy, aiming for improved sustainability insights for the fast-food packaging sector.