The use of experiments in social science has brought huge gains in our knowledge of the world. However, in recent debates, sharp critiques of the power imbalances of the discipline have been made. There have been some responses on how we can improve our approach to be more ethical. These responses have often conceived of research ethics rather narrowly, and not included wider responsibilities beyond the protection of participants. Often missing from both sides has been empirical study of the preferences of those research participants, and the societies they belong to. As part of our commitment to racial, gender and wider social justice, commitment to advancing the voices of research participants, and under the banner of our values of respect and purpose, Busara proposes to organise and formalise its agenda on research ethics. We will combine past learnings with new studies over the next three years, to deeply understand the experiences of research participants, and find better ways of closing the loop in communication with those participants. From there, we will co-create, test and disseminate changes to research processes and practices that improve participant welfare and uphold ever-higher standards of ethical practice. We believe that this is both more just, and likely to produce better quality research.