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James Lewis

Professor James Lewis

Director of Y Lab

School of Social Sciences

+44 29208 79874
sbarc|spark, Room 03.14, Maindy Road, Cathays, Cardiff, CF24 4HQ
Available for postgraduate supervision


I am the director of Cardiff University's Y Lab - the Public Services Innovation Lab for Wales. At Y Lab we support and promote experimentation and innovation in public services in Wales, and conduct research on the hows and whys of public services innovation. Please see our website and our Twitter account @ylabwales for more details.

Prior to this, I worked as a statistician and epidemiologist at the London School of Hygiene & Tropical Medicine for 12 years. I still conduct some research in global health, focusing on pragmatic evaluations of health system innovations across a range of disease areas and geographies.
















@ylabwales we are conducting research on public service innovation, including through several of our programmes, including:

The primary evaluation methodologies I have applied in global health have been cluster randomised trials and stepped wedge trials, always in interdisciplinary teams. I lived and worked in Johannesburg for seven years and I have also worked on projects in Peru, Burkina Faso, India, China, Zimbabwe and Zambia.



2001 –2005: PhD in Epidemiology at Imperial College London. “Behavioural, demographic and social risk factors for HIV infection in rural Zimbabwe.” Received MRC funding.

1999 –2000: MSc in Applied Statistics at the University of Oxford. Grade: Distinction. Gutierrez Toscano prize for joint top result. Received EPSRC funding.

1996 – 1999: BA (Hons) in Mathematics at the University of Cambridge. Class: 2:1.

Professional memberships

Fellow of the Royal Geographical Society

Academic positions

2016 – 2018: Associate Professor, London School of Hygiene & Tropical Medicine. Based in London.

2013 – 2018: Deputy Director, Centre for Evaluation, London School of Hygiene & Tropical Medicine.

2013 – 2016: Senior Lecturer, London School of Hygiene & Tropical Medicine. Based in London.

2012 – 2013: Lecturer, London School of Hygiene & Tropical Medicine. Based in London.

2007 – 2012: Lecturer, London School of Hygiene & Tropical Medicine. Based at Aurum Institute, Johannesburg.

2005 – 2007: Research Fellow, London School of Hygiene & Tropical Medicine. Based at Aurum Institute, Johannesburg.

2001: Research assistant, National Centre for Epidemiology and Population Health, Australian National University, Canberra.

2000 – 2001: Research assistant, Centre for Socioeconomic Research, Welsh School of Pharmacy, University of Wales, Cardiff.

Committees and reviewing

Statistical reviewer, Lancet journals


I currently supervise one professional doctorate student, Becky Parish, looking at cross-border experiences of the NHS focussed on Gloucestershire where elements of both Welsh and English NHS care can be experienced.

I currently supervise one PhD student, Cara O'Connor, looking at experiences of an intervention that supports people to adhere to their antiretroviral medication in an innovative HIV clinic in the Philippines.

I am interested in supervising PhD and Professional Doctorate students in the areas of public services innovation and social innovation.