The National Perinatal Epidemiology Unit (NPEU) is a multidisciplinary research team dedicated to improving the care provided to women and their families during pregnancy, childbirth and the postpartum period, as well as the care provided to the newborn. Our aim is to conduct research with a view to providing information that can improve the health and welfare of babies, mothers and their families and promote the effective use of resources in the perinatal health services. We achieve this by undertaking a broad range of clinical research using a variety of methods. For example, when investigating the impact of a new or existing treatment, we will usually use a randomised controlled trial. However, if we want to look at women's views about their maternity care, we will use a survey design or a qualitative study. The NPEU's funding is provided from a variety of sources. The Department of Health Policy Research Programme (PRP) provides funding for an extensive and broad Programme of Work covering a five year period. This funding has been awarded to the NPEU since 1978. In addition, we receive funding from a range of other funding bodies for specific projects, such as randomised controlled trials or observational studies. The NPEU collaborates widely with clinicians and researchers throughout the UK, as well as internationally.