Background: Efforts to understand and tackle socioeconomic inequities in access to palliative and end-of-life care require comprehensive understanding about the extent of and reasons for inequities. Most research on this topic examines differences in receipt of care. There is a need for theoretically driven research that considers both receipt of care and the wider factors influencing the relationship between socioeconomic position and access to palliative and end-of-life care. Methods: A mixed-methods narrative synthesis on socioeconomic position and access to palliative and end-of-life care in the UK. Study searches were conducted in databases AMED, Medline, Embase, CINAHL, SocIndex, and Academic Literature Search along with grey literature sources in July 2020. The candidacy model of access, which describes access as a seven-stage negotiation between patients and providers, guided study searches and provided a theoretical lens through which data were synthesised.Results: Searches retrieved 5303 studies (after de-duplication), 29 of which were included. The synthesis generated four overarching themes, within which concepts of candidacy were evident: identifying needs; taking action; local conditions; and receiving care.Conclusion: Socioeconomic position does not have a consistent association with receipt of palliative and end-of-life care in the UK. The use of the candidacy model of access helped to identify key gaps in the UK evidence, including those concerning the relationship between socioeconomic position, organisational context, and assessing need for palliative care.