Patient and public involvement in priority-setting decisions in England's Transforming NHS: An interview study with Clinical Commissioning Groups in South London sustainability transformation partnerships.

Long-standing issues distinctive to PPI in NHS prioritization decisions are resurfacing with the moves towards STPs, particularly in relation to contradictions between the rhetoric of 'partnership' and reorganizations that foster more top-down control. The interviews reveal pervasive distrusts across a number of levels that are counterproductive to the collaborations upon which STPs rely. And it is argued that such distrust and contestations will continue until a formalized space for PPI in STP priority-setting is created.