Footnotes

• Twitter @BrettSmithProf, @FosteratBristol

• Contributors BS led the project with support from CF. BS, JN, PJ and LB managed the coproduction process. BS and CF outlined the manuscript and supplementary material. All authors contributed to the development and writing of the work.

• Funding Department of Health and Social Care and the Economic and Social Research Council (Durham University Impact Acceleration Account).

• Competing interests LB reports as the Get Yourself Active Programme Manager of Disability Rights UK. Disability Rights UK is the leading charity of its kind in the UK. We are run by and for people with lived experience of disability or health conditions. BB and JB report as employers for the Department of Health and Social Care.

• Provenance and peer review Not commissioned; externally peer reviewed.

• Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.