In the Policy Memorandum accompanying the National Care Service (Scotland) Bill there is recognition that "the interface with services for adults is a critical consideration in relation to the provision of children's services," noting that "it can be particularly difficult to separate out social work support for adults and the social care needs of children who live with them." It goes on to note that "of children who are in the child protection system, the majority are there as a result of parental factors, including drug and/or alcohol use, mental health and involvement in the justice system."