1. Department of Primary Care and Population Health; University College London; London; UK
2. Social Care Workforce Research Unit; King's College London; London; UK
3. Dementia UK; London; UK
4. Dementia Research Unit; University of East Anglia; Norwich; UK
5. Institute for Ageing and Health; Newcastle University; Newcastle upon Tyne; UK
6. Department of Mental Health Sciences; University College London; London; UK
7. Centre for Health Service Studies; University of Kent; Canterbury; UK
8. Personal Social Services Research Unit; London School of Economics and Political Science; and Centre for the Economics of Mental Health, Institute of Psychiatry at King's College London; London; UK
9. School of Community Based Medicine, Primary Care Research Group; University of Manchester; Manchester; UK