Jakob is researching new ways to measure health impacts of energy efficiency retrofits. He is funded by NIHR’s Advanced Fellowship programme. He worked for different national public health agencies and a national survey before taking up a career as researcher.

I became a PPI collaborator because both as a carer and as a user of health services, I saw good and bad healthcare. This is also the reason why I am passionate to ensure the seldom heard voices are heard. The most rewarding aspect of my role is to be able to contribute in helping researchers to improve things from a patient’s perspectives.

Matt is Professor of public health. His research focuses on generating evidence to inform policy and practice in areas such as housing, urban regeneration, community empowerment, food and alcohol availability, and local government. Matt currently co-leads the National Institute for Health and Care Research (NIHR) School for Public Health Research (SPHR) Healthy Places Healthy Planet Programme.

Hameed Khan is an ex-service user of mental health services and carer for his mother who has long term physical and mental health conditions. He has worked in the voluntary and community sector and health and social care field for over 20 years in various roles from frontline support work to middle management. Prior to becoming a full-time carer, he was teaching 16 to 19 years old Level 3 Business Management in further education college.

I am a Public and Patient Involvement (PPI) advisor with lived experience as both a patient and a long‑term carer. My perspective is shaped by supporting a family member with complex health needs while navigating the realities of poor‑quality housing, fuel poverty, and the wider pressures that come with long‑term conditions. These experiences have given me a deep understanding of how housing, health, and social inequalities intersect in everyday life, and why research in this area must stay grounded in the voices of the people most affected.

James is Associate Professor with expertise in modelling health impacts of environmental interventions including climate change mitigation and adaptation questions with a particular research focus on the health effects of improving home energy efficiency. James led on the evaluation of the Irish Government’s ‘Warmth & Wellbeing’ pilot home energy efficiency scheme. The study involved 1,650 retrofitted homes in Dublin and measured health impacts for people with chronic respiratory conditions.

Luisa is a GP, NIHR Doctoral Research Fellow at LSHTM, and Senior Policy Advisor at The Health Foundation. Her research and policy projects concern health systems financing, organisational models of general practice, and health care professional behaviour change with organisations including the World Health Organisation, Johns Hopkins Bloomberg School of Public Health and Nuffield Trust.

I am Debs Smith. I live in social housing in the west Midlands and have experienced lack of money. I have been doing Patient and Public Involvement work with researchers using my lived experience of multiple long term health conditions. I have done and still do a lot of volunteering in my community.

Frank is Professor in epidemiology and public health with expertise in environmental epidemiology, evaluation of complex interventions, statistics, and natural experiments. Frank co-leads the Applied Data Science Team at National Institute for Health and Care Research (NIHR) Applied Research Collaboration (ARC) West and is co-lead of the NIHR School for Public Health Research (SPHR) Healthy Places Healthy Planet Programme. He also convenes the NIHR SPHR Network for the use of Natural Experiments in Public Health.