The document summarizes Tavistock's approach to reducing environmental impact through three main strategies: 1) Reducing their own impact, 2) Conducting projects and partnerships on environmental topics, and 3) Supporting other organizations. It provides examples of projects Tavistock has evaluated on smart meters, sustainable fashion, climate resilience, and decarbonizing heat networks. It highlights the complexity of influencing socio-technical systems and the important role of "champions" who can help engage diverse groups and navigate complex relationships between factors like energy solutions, fuel poverty, and local development plans.