Both pre-existing diabetes (PDM) and gestational diabetes mellitus (GDM) are associated with adverse pregnancy outcomes. Although modern care is effective, pregnancies complicated by diabetes remain ‘high risk’. Diabetes in pregnancy outcomes in Australia could be enhanced through improvements in access and quality of care. One of the approaches to improve quality of care is through audit and benchmarking. ADIPS previously successfully piloted an Australasian Diabetes in Pregnancy Audit Programme (Simmons D, Cheung NW, Lagstrom J, Flack JR, McIntyre HD, Bond D, Johnson E, Wolmarans L, Wein P, Sinha AK for the ADIPS National Diabetes in Pregnancy Audit Project team. The ADIPS Pilot National Diabetes in Pregnancy Audit Project. Aust NZ J Obs Gynae 2007;47:198-206) and this stimulated ongoing internal audits across Australia and New Zealand. Since this project, other centres have commenced their own audits as part of a quality improvement process. In the UK and elsewhere, national audit and benchmarking programmes have been associated with improvements in care. The ADIPS Board have now agreed to recommence a national programme, inviting members onto a working group with defined Terms of Reference. Issues to be addressed are agreement over the data items and their definition, information governance (including security, privacy, consent and ethical issues), reporting and benchmarking processes, handling overlap with other data collection programmes, and approaches to maximize participation across Australasia. The goal of the process is to support diabetes in pregnancy services to optimize and maintain standards of care, to support local and national funding applications and to continuously improve the pregnancy outcomes of women with diabetes in pregnancy.