Co-producing a complex psychosocial intervention during COVID-19 with young people transitioning from adolescent secure hospitals to adult services in England: Moving Forward intervention (MFi).

The current findings promote evidence-based initiatives and build robust practice frameworks that inform treatment and policy guidelines. The young people, parents and keyworkers found the MFi supportive and valued the co-production experience. As such, co-production has been a vital tool in promoting patient engagement and empowerment, and reducing service inequalities, especially in adolescent secure hospitals.