1. Centre for Research in Ageing and Cognitive Health, University of Exeter, Exeter, UK
2. School of Dementia Studies, University of Bradford, Bradford, UK
3. Research Institute for the Care of Older People (RICE), Bath, UK
4. Division of Population Medicine, University Hospital Llandough, Cardiff University, Cardiff, UK
5. Department of Neuroscience and Experimental Psychology, University of Manchester, Manchester, UK
6. Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, St Thomas’ Hospital, King’s College London, London, UK
7. Centre of the Health of the Elderly, Northumberland, Tyne and Wear NHS Foundation Trust, Newcastle upon Tyne, UK
8. Kent and Medway NHS and Social Care Partnership Trust, St Martin’s Hospital, Canterbury, UK
9. Dementia Pal Ltd, Southampton, UK
10. North Wales Organisation for Randomised Trials in Health, Bangor University, Bangor, UK
11. Personal Social Services Research Unit, London School of Economics and Political Science, London, UK
12. Institute of Health Research, University of Exeter Medical School, Exeter, UK
13. Whitaker Research Ltd, Bangor, UK
14. Dementia Services Development Centre, Bangor University, Bangor, UK