Our people

Senior Investigators

Nicholas Mays

Nicholas MaysDirector of PIRU

Nicholas Mays has over 35 years’ experience in undertaking health policy research and providing health policy advice, with particular expertise in policy and programme evaluation, policy analysis, mixed method systematic reviews of qualitative and quantitative evidence, and international comparisons of policies and reforms. He is Professor of Health Policy at LSHTM as well as a Senior Associate of the Nuffield Trust. He is also Adjunct Professor in the Health Services Research Centre, Faculty of Health, Victoria University of Wellington, New Zealand. He continues to advise the NZ Government. He is a Board Member and Trustee of the Centre for Ageing Better, one of the 'What Works Centres' established with funding from the Big Lottery.

Bob Erens

Bob ErensDeputy Director of PIRU and lead for survey methods in evalution

Bob Erens has 35+ years’ experience of applied research and evaluation in the fields of health services, public health and survey methodological research. He previously worked at the National Centre for Social Research for 24 years, where he was Director of the Health Research Group and the Survey Methods Unit, and where he led a number of large national studies including the Health Survey for England. He is a Trustee of the Social Research Association and a Fellow of the Academy of Social Sciences.

Martin Knapp

Martin KnappPIRU lead for mental health & health care of older people and co-lead for evaluation of social care

Martin has 40 years’ experience in social care, mental health and other health research. From 1996 to 2019 he directed PSSRU at LSE, and in 2009 he became director of the NIHR School for Social Care Research (and will continue until 2024). He is Professor of Health and Social Care Research in the Health Policy Department at LSE, as well as Professorial Research Fellow in the Care Policy and Evaluation Centre (CPEC) – the new name for PSSRU. His work has informed policy on psychiatric hospital closure, social care markets, personal budgets, prevention, psychological therapies and dementia care. His current research interests are primarily in adult social care, dementia, child and adult mental health and autism. He has expertise in application of economic methods to social and health care issues and a wealth of experience of undertaking rigorous yet responsive, policy-relevant research.

Mark Petticrew

Mark PetticrewPIRU co-lead for the evaluation of public health policies & programmes

Mark Petticrew is Professor of Public Health Evaluation in the Faculty of Public Health and Policy at LSHTM. He is Director of the NIHR Public Health Policy Research Unit and Co-Director with Prof. Karen Lock of the NIHR School for Public Health Research at LSHTM (see http://sphr.lshtm.ac.uk). His main research interests are in evidence-based policymaking, and the evaluation of the effects on health of social and other policies. His work also focuses on the commercial determinants of health – in particular, the influence of unhealthy commodity industries on health (e.g. through the promotion of tobacco, alcohol, and unhealthy foods). This latter research is part-funded through the SPECTRUM Consortium (https://ukctas.net/spectrum/announcement.html).

Ellen Nolte

Ellen NoltePIRU co-lead for horizon scanning and for health services policy & programme evaluation

Ellen has extensive experience in health systems research, international health care comparisons and performance assessment. She led the Department of Health, PRP-funded 'On-call Facility for International Healthcare Comparisons' (2005-2014), which provided evidence on international developments to inform policy in England. Over the past decade she has developed an internationally recognised research portfolio around innovative service models that seek to better meet the needs of people with complex and long-term health problems, with a particular focus on care coordination and integration within and across sectors.

James Barlow

James BarlowPIRU lead for understanding dynamics of innovations in health and care and futures work, and co-lead for horizon scanning

James is an expert in innovation in healthcare, particularly the relationship between the design, planning and sustainable implementation of complex technology, service and infrastructure-based innovations. James was Principal Investigator of the EPSRC Health and Care Infrastructure Research and Innovation Centre (HaCIRIC), 2006-13, and co-director of the Innovation Studies Centre at Imperial College Business School, (2003-2006).

Richard Grieve

Richard GrievePIRU lead for quantitative methodological development and for health economic evaluation methods

Richard is an expert on quantitative evaluation from an economics perspective. Richard has extended methods for using non-randomised data to evaluate new health policies. He has also improved methods for analysing data from cluster randomised trials which are often used to evaluate organisational innovations.

Raphael Wittenberg

Raphael WittenbergPIRU lead for economic modelling and co-lead for evaluation of social care policies and programmes

Raphael is an associate professorial research fellow at PSSRU at the London School of Economics and Political Science and deputy director of the CHSEO research centre at the Nuffield Department of Primary Care Health Sciences at the University of Oxford. Previously, he was a senior economist at DHSC. He has led the design and construction of a number of projection models of long-term care demand and expenditure. He has expertise in the economics of long-term care, funding of social care, dementia care, unpaid care, personalisation in long-term care and the social care workforce.

Juliette Malley

Juliette Malley PIRU lead on outcome assessment and co-lead on evaluation of social care policies and programmes

Juliette's research is in the area of social care policy and practice, with a focus on England and other high-income countries. She uses both quantitative and qualitative methods to explore issues around the governance and performance of social care systems at national and sub-national levels, and currently is investigating how to support the adult social care sector to start-up, implement and spread affordable innovations that work well for everyone. As a core contributor to the ASCOT quality of life measure, she also has substantial expertise in the measurement of social care outcomes for the purposes of evaluation of interventions and systems performance.

Stefanie Ettelt

Stefanie EtteltPIRU lead for understanding the dynamics of policy pilots and their local implementation and co-lead for mixed method evaluation and policy analysis

Stefanie has a particular interest in the role of pilots in policy development and how local implementers shape their results. She has published guidelines for policy-makers on how to organise policy pilots and was a contributor to the DH-funded ‘On-call Facility for International Healthcare Comparisons’ between 2005 and 2010. She is a political scientist and policy analyst by training and holds a Doctorate in Public Health.

Cécile Knai

Cécile KnaiPIRU co-lead for evaluation of public health policies and programmes and for mixed method evaluation and policy analysis

Cecile specialises in the evaluation of public health policies and programmes in the field of food and nutrition. She conducts research on various aspects of public health policy, including food and nutrition policy, public health governance analysis, obesity and inequalities, and analyses of the impact of voluntary and other policy options on public health. Cécile recently established a Research Alliance on Public Health Governance to conduct cross-disciplinary research on public health policies, including organisations involved and their interests; distribution of power; formal and informal mechanisms through which state and non-state actors (such as unhealthy commodity industries) gain agency and shape relevant policy at local, national and international levels. Prior to joining LSHTM she worked at the World Health Organization's Regional Office for Europe (Copenhagen, Denmark) as a technical officer in the food and nutrition unit.

Mary-Alison Durand

Mary-Alison DurandCo-principal investigator for the national evaluation of integrated care and support Pioneer programme

Mary-Alison has 30 years’ experience in leading and undertaking health services research and evaluation in a wide range of settings. Her interests include policy evaluation, the assessment of health and care provision for individuals with complex physical and/or mental health problems, the evaluation of treatment effectiveness, and the roles of health professionals and others in service development, organisation and delivery. Since joining LSHTM she has applied her expertise in the use of both qualitative and quantitative research methods to research on topics including the modernisation of critical care, community foundation trusts, the Public Health Responsibility Deal, and the evaluation of an intervention to reduce tap water scalding in social housing. Prior to that, she worked mainly in the mental health and addictions research fields. She co-edited the latest edition of Principles of Social Research.


Lay Researchers and PPI Advisors

Jennifer Bostock

Jennifer Bostock PIRU co-lead on public and patient involvement

Jennifer has experience of strategy for public involvement in research via QORU and the NIHR School of Public Health & NETScc; PPI training as PPI Chair and training lead of the Research Design Service Public Advisory Group; and dissemination via academic and popular media. Jennifer will ensure that the Unit’s PPI strategy exhibits best practice. Jennifer is the current ethics lead for the Research Design Service (RDS) and is a former Wellcome Biomedical Ethics Scholar. Her background in research ethics (as Vice Chair of an NHS REC & Deputy Chair of an International REC), NHS primary care commissioning, regulation (as a former CQC inspector) and health and social care quality improvement (via NAGCAE, HQIP & NICE) will add a set of independent skills to the team. Her own disability living with a long-term condition and her personal experience as a carer will help root the work of the Unit in the reality of service provision.

Matthew Baker

Matthew Baker PIRU co-lead on public and patient involvement

Matthew has particular expertise in cancer research, advising on clinical trials and prevention studies and has worked extensively with NCRI and CRUK. He has collaborated with a number of research teams concerned with aspects of cancer patients’ experience, particularly in relation to widening patient participation in clinical trials. He is a member of the NCRI Consumer Forum Steering Group and a member of QORU’s Public Involvement Implementation Group.



Mustafa Al-Haboubi LSHTM

Nick Douglas LSHTM

Rebecca Glover LSHTM

Tommaso Manacorda LSHTM

Stefanie Tan LSHTM

Lavanya Thana LSHTM

Emily Warren LSHTM

Lorraine Williams LSHTM

Project management and support

Elizabeth Eastmure is an independent consultant contracted to LSHTM to provide project management and research support to the Unit. She is an Honorary Research Fellow with experience in health policy research. Her background is in policy analysis and project/programme management. Previous work includes policy and research projects with the Nuffield Trust, NHS organisations and the former Healthcare Commission.

Administrative support

Paula Fry Administrator for PIRU