This research project presents the results of a survey of participants, across all four phases of the EPA’s Cleaner Greener Production Programme. The survey collected information on the impact of programme participation, focusing on technological changes, economics impacts, environmental improvements as well as organisational changes in the areas of changes to skills, knowledge and attitudes. We also collected data on the longer term impact of CGPP participation, asking previous participants about ongoing achievements in technological change, environmental awareness, as well as economic and resource savings. The research was commissioned by the EPA to support their development of the programme into future phases.