Sallie is an internationally recognised scholar in ageing, disability and rehabilitation. She is also an experienced methodologist in the area of clinical trials and high quality evaluation of health care practice.
In 2020 Sallie served as a panel member and inter-disciplinary expert for the Higher Education Funding Council of England Research Excellence Framework assessment phase. She has served as a Chair of the Health Technology Assessment Board and other senior roles in National Institute of Health Research and is a Trustee of the Versus Arthritis charity.