David Challis is Professor of Social Care at the University of Nottingham in the Institute of Mental Health. He is also an NIHR Senior Investigator and has undertaken the NIHR Ashridge Senior Leadership Development. Previously he was Professor of Community Care Research and Founder Director of the PSSRU at the University of Manchester, leading a research team of 25 staff. Previously he was Professor of Social Work and Community Care at the PSSRU at the University of Kent.At the University of Manchester, he led the prestigious NIHR School for Social Care from 2009-2018 including the successful application for its renewal for 2019 to 2024. which was written with colleagues - Dr Jane Hughes, Angela Worden and Dr Helen Chester (all now at the University of Nottingham), Dr Mark Wilberforce (now at the University of York), and Sue Tucker (University of Manchester). He is the author of 21 books and over 400 journal papers.His studies of case management and community-based care for older people providing alternatives to hospital and nursing home care influenced policy development both in the UK and internationally. Other studies include: needs assessment processes; care coordination; integration of health and social care; dementia care; and mental health services for older people.He has been an adviser on services for older people to the Governments of Australia, Japan, Hong Kong, Ireland, Canadian Province of Ontario, the US State Government of Wisconsin, the Department of Health in England and the National Assembly for Wales.He has been associated with over £36 million in research income and has been Chief Investigator on two NIHR Programme Grants in Social Care: EFFECTIVE HOME SUPPORT IN DEMENTIA CARE: COMPONENTS, IMPACT AND COSTS OF TERTIARY PREVENTION. (CHIEF INVESTIGATOR: 2013-2019)NATIONAL TRENDS AND LOCAL DELIVERY IN OLD AGE MENTAL HEALTH SERVICES (CHIEF INVESTIGATOR: 2007-2012)https://sites.google.com/view/rscop/