This Guide will enable the composites sector to understand the environmental and social impacts of different composite materials and manufacturing processes. The life-cycle impacts of each material and process choice from the cradle to the factory gate are presented in simple comparative rankings, allowing informed decisions to be made. A range of production processes, process variations and materials have been selected to provide a balance between systems that are commonly used in the composites industry and emerging materials with the potential to provide an environmental benefit. The easy-to-use format means that basic life-cycle assessment data for composite materials and processes can be easily seen and compared. The Guide will allow everyone involved in composite design and manufacture to improve the sustainability performance of their products and present clear sustainability rationales to potential clients, increasing their business and stimulating growth in the composites industry. 40 pages