A partnership which includes people and datasets from six existing UK research programmes that are addressing infant and maternal health. MIREDA aims to improve maternal and infant health, particularly among disadvantaged groups by creating a UK resource including harmonised maternal and infant birth-cohort health data, linked to local datasets including those in public health, neonatal health, imaging, primary care and hospitals. It will establish a multidisciplinary collaboration to provide the tools and supporting expertise for undertaking analysis in each of the cohorts without need to move the data. In addition, it will develop methods for data standardisation and common data management across datasets to ensure comparable analysis and implement software for automating epidemiological study methods for ease of obtaining analysable datasets.