Footnotes

• Funding KL’s time on this article was supported by the National Institute for health Research (NIHR) Collaboration for Leadership in Applied Health Research and Care South West Peninsula (NIHR CLAHRC South West Peninsula). At the time of writing, HR’s post was part-supported by a grant from the Department of Health funded through the Children’s Policy Research Unit. Research at UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital for Children receives a proportion of the funding from the Department of Health’s NIHR Biomedical Research Centres funding scheme.

• Disclaimer The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health and Social Care. This is an independent (unfunded) think piece, and the views expressed are not necessarily those of UCL Great Ormond Street Institute of Child Health or its funders.

• Competing interests None declared.

• Provenance and peer review Commissioned; externally peer reviewed.

• Patient consent for publication Not required.