For many years, there has been an international concern about the fragmented nature of health and social care services for vulnerable older people and younger adults. This article examines the implementation of two major policies in England designed to ensure frail adults and older people receive services appropriate to their needs. First, care management, which was introduced in 1993 and provided by local government, and second case management, which was introduced in 2005 and provided by primary care through the National Health Service. An analysis of the implementation of the two policies is presented, and data from two national surveys are used to describe similarities and differences between the two approaches in terms of goals, arrangements, service characteristics, and indicators of integration and differentiation within care coordination arrangements. Both were designed to promote the provision of care at home as an alternative to more costly alternatives. Discretion within the policy implementation process has militated against the development of a more differentiated approach to care management in local authorities as compared with case management in primary care trusts and more generally, integration between the two. Future developments within both service settings will be influenced by the introduction of personal budgets.