In-depth interview study of volunteer UK GPs with self-declared personal experience of burnout, to explore the relationship between burnout and spiritual health already identified through quantitative work, and to answer the following research questions: What are the underlying predisposing, precipitating, perpetuating and protective spiritual health factors in GP burnout? How do the phenomena of GP spiritual health and GP burnout interact? Could this interaction lead to lower predisposing, precipitating and perpetuating, or greater protective factors for burnout in GPs?