**5. Conclusions**

We have identified multiple patient-identified barriers to living kidney donation in the UK Black, Asian and minority ethnic group population, which should be further investigated and addressed to reduce the ethnic inequity in living-donor kidney transplantation in the UK.

**Supplementary Materials:** The following are available online at http://www.mdpi.com/2077-0383/9/11/3751/s1, Supplementary Study sites, Supplementary Interactions, Table S1. Responders and non-responders, Table S2. Responders compared to national denominator population, Table S3. Missing data analysis, Table S4. Participant demographics—comparison of White and Black, Asian and minority ethnic group respondents, Table S5. Multivariable logistic regression analysis comparing reasons potential donor unsuitable between White and Black, Asian and minority ethnic group participants—missing explanatory variables imputed, Table S6. Characteristics of Black, Asian and minority ethnic group participants providing qualitative responses. Table S7. Themes and illustrative quotes from thematic analysis of White participant responses.

**Author Contributions:** Conceptualization, P.B., Y.B.-S., C.R.T.; methodology, P.B., Y.B.-S., S.M.; software, K.W., P.B.; formal analysis, K.W., P.B., S.M., A.O.-S.; investigation, K.W., P.B.; data curation, P.B.; writing—original draft preparation, K.W., P.B.; writing—review and editing, K.W., P.B., A.O.-S., S.M., F.J.D., Y.B.-S., C.R.T., F.C., D.I., S.B.; supervision, A.O.-S., Y.B.-S., C.R.T., F.C.; project administration, P.B.; funding acquisition, P.B. All authors have read and agreed to the published version of the manuscript.

**Funding:** This report is independent research arising from a Kidney Research UK Project Grant (Reference RP\_028\_20170302). Neither Kidney Research UK nor the University of Bristol had any role in study design, data collection, analysis, interpretation, manuscript preparation of the decision to submit the report for publication. K.W. is supported by the Elizabeth Blackwell Institute for Health Research, University of Bristol and the Wellcome Trust Institutional Strategic Support Fund. P.K.B. is funded by a Wellcome Trust Clinical Research Career Development Fellowship. Y.B.-S. is supported by the NIHR Applied Research Collaboration West (NIHR ARC West) as data science lead. The views expressed in this article are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care or any of the other funders.

**Acknowledgments:** The authors would like to thank all the study participants, the participating centre research nurses and coordinators (Hugh Murtagh, Nina Bleakley, Mary Dutton, Kulli Kuningas, Cecilio Bing Andujar, Ann-Marie O'Sullivan, Nicola Johnson, Kieron Clark, Thomas Walters, Mary Quashie-Akponeware, Jane Turner, Gillian Curry, Hannah Beer, Lynn.D Langhorne, Sarah Brand, Maria Weetman, Molly Campbell, Megan Bennett, Sharirose Abat, and Agyapong Kwame Ansu) and the local collaborators who facilitated the study (Sarah Heap, Mysore Phanish, Shafi Malik, Aisling Courtney, Adnan Sharif, Nicholas Torpey, Refik Gökmen, Michael Picton, Linda Bisset, Edward Sharples, and Simon Curran).

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.
