Millions of children in low- and middle-income countries (LMIC) experience inadequate learning opportunities and harsh punishment by caregivers and these are important risk factors for poor child development. Research at Bangor led to two highly effective intervention programmes to improve early childhood outcomes in LMIC. The Irie Classroom Toolbox is a violence-prevention programme that is being implemented nationally in Jamaica. The Group Reach Up and Learn programme to improve parenting skills has been adapted for use in 7 countries across South Asia, the Middle East and South America. Both programmes have proven benefits for caregivers’ practices and children’s development and have been implemented in partnership with over 5,500 teachers, over 7,000 mothers and reached over 500,000 children globally.