The authors would like to thank everyone who gave up their time to take part in interviews to inform this work: the breast cancer care team at Imperial College Healthcare NHS Trust, the breast cancer care and renal care teams at Sheffield Teaching Hospitals NHS Foundation Trust, Portsmouth Child and Adolescent Mental Health Services, Southampton Child and Adolescent Mental Health Services, and Southampton Children’s Hospital. Particular thanks go to Matthew Terry and Cloud Chamber for their work in designing and facilitating the interviews. The authors would also like to thank colleagues at the Health Foundation for their comments and advice during the production of this report, and the work associated with it.