The need to evaluate medicines for children is widely acknowledged due to pervasive unlicensed medicine use in the pediatric setting. The EU Paediatric Regulation was developed to address these considerations, which subsequently led to the establishment of the National Institute of Health Research (NIHR) Medicines for Children Research Network (MCRN) in England. MCRN supports public and industry studies, and facilitates feasibility, site setup, recruitment and other services. The MCRN and other networks are members of the European Network of Paediatric Research at the European Medicines Agency (Enpr-EMA). Enpr-EMA was established to foster and coordinate research, and develop collaborations across Europe. MCRN works with Enpr-EMA, industry and others to improve the conduct of research for the benefit of children's health.