Gill has been researching experiential aspects of chronic illness since the early 1990s with a focus on the impact of HIV and more recently other chronic illnesses. She has also been the Chief Investigator on a number of research projects related to socially excluded groups such as the lived experiences of offenders with substance misuse problems and people living in low income households.
Gill was Director of the NIHR Research Design Service (RDS) for East of England (2008-2019) and was the RDS national lead for public involvement. Gill was a member of NIHR INVOLVE executive group and is thus at the forefront of the advancement of public involvement in health and care research across NIHR and beyond.
She has recently edited a special issue of the Frontiers Sociology journal about ‘Public participation in health care: exploring the co-production of knowledge’ which has been published as an e-book.