From 2019-2023, UCL led a research project with many partners evaluating the Quality of Care Network. The results have been presented at various Quality of Care Network-related meetings in the past couple of years. The final collection of peer reviewed papers have been published with commentaries as a collection in PLOS Global Public Health this month. Our collection of studies focuses on four diverse case study network countries: Bangladesh, Ethiopia, Malawi and Uganda. The collection includes papers on network emergence, legitimacy, effectiveness, configurations and interactions, theory of change, individual, organisational and system circumstances, innovation, learning and sharing, and sustainability. It also reflect on our experiences evaluating the Quality of Care Network.