The interface between the child protection and domestic violence sectors is often problematic, in that the two sectors operate relatively independently, with little integration. However, it is widely recognised that these sectors need to work more closely to enhance both women's and children's safety. This paper explores the processes needed for the child protection and domestic violence sectors to develop collaborative partnerships that lead to the provision of higher-quality responses to both women and children. Drawing on collaboration theory, a number of barriers to the development of successful partnerships are described, and applied to initiatives that seek to develop integrated approaches between child protection and domestic violence services. It is concluded that there is much scope for the two sectors to work closely together, but that the development of integrated responses involving both child protection and domestic violence services will take a significant commitment, level of determination, and stamina from both parties.