This report presents findings of Stage 2 of the National Maternity Data Development Project, which was established in response to the National Maternity Services Plan. The aim of the Project is to build a more comprehensive and consistent national data collection for maternal and perinatal health. Stage 2 has seen substantial progress in: data development for clinical data items and maternity models of care; maternal and perinatal mortality reporting; and online dissemination of perinatal data.