The current study complements work in relation to the CAF, by focusing on models of joined-up assessment for children with significant and complex health needs and/or disabilities. It provides case-study examples from six local authorities of different ways of adopting a more integrated approach to assessing the needs of such children. This report describes the experiences of these authorities, examines the issues that have been faced, and considers the factors that have helped and hindered their attempts to join up specialist assessments.