HWBs are expected to (1) accredit and assess CCGs, approve their plans and budgets, and refer disagreements to the national board. (2) Develop joint strategic needs assessments and understand the impact of cost-cutting locally. (3) Champion public health and reduce inequalities. However, getting diverse stakeholders including GPs, councils, users, and the national board to agree will be challenging. HWBs must seek evidence-based, long-term solutions while building trust between sectors.