Cross-sector collaboration to reduce health inequalities: a qualitative study of local collaboration between health care, social services, and other sectors under health system reforms in England

The major influences on cross-sector collaboration in England mirror key areas identified in international research, offering opportunities for learning between countries. But our data highlight the pervasive-frequently perverse-influence of national policy on local collaboration in England. National policymakers risked undermining their own reforms. Closer alignment between policy, process, and resources to reduce health inequalities is likely needed to avoid policy failure as ICSs evolve.