RT Journal Article SR Electronic T1 Peer advocacy and access to healthcare for people who are homeless in London, UK: a mixed method impact, economic and process evaluation protocol JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e050717 DO 10.1136/bmjopen-2021-050717 VO 11 IS 6 A1 Sujit D Rathod A1 Andrew Guise A1 PJ Annand A1 Paniz Hosseini A1 Elizabeth Williamson A1 Alec Miners A1 Kate Bowgett A1 Martin Burrows A1 Robert W Aldridge A1 Serena Luchenski A1 Dee Menezes A1 Alistair Story A1 Andrew Hayward A1 Lucy Platt YR 2021 UL http://bmjopen.bmj.com/content/11/6/e050717.abstract AB Introduction People who are homeless experience higher morbidity and mortality than the general population. These outcomes are exacerbated by inequitable access to healthcare. Emerging evidence suggests a role for peer advocates—that is, trained volunteers with lived experience—to support people who are homeless to access healthcare.Methods and analysis We plan to conduct a mixed methods evaluation to assess the effects (qualitative, cohort and economic studies); processes and contexts (qualitative study); fidelity; and acceptability and reach (process study) of Peer Advocacy on people who are homeless and on peers themselves in London, UK. People with lived experience of homelessness are partners in the design, execution, analysis and dissemination of the evaluation.Ethics and dissemination Ethics approval for all study designs has been granted by the National Health Service London—Dulwich Research Ethics Committee (UK) and the London School of Hygiene and Tropical Medicine’s Ethics Committee (UK). We plan to disseminate study progress and outputs via a website, conference presentations, community meetings and peer-reviewed journal articles.