In collaboration with London School of Hygiene and Tropical Medicine, Children Unite led a four-country pilot study on research ethics in Nepal, Indonesia, Kenya and Guyana. Findings are informing a new collaborative initiative between Children Unite, Terre des Hommes and Family for Every Child, the Child Research Ethics Group (CREG), that fills a crucial gap identified in the research - the need to adapt ethics review and support for research with marginalised groups of children and young people.