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My main interest and expertise is in health services and systems research, international health care comparisons and performance assessment. Over the past decade I led a programme of work around international health care comparisons and 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.
I am Director of the NIHR Policy Research Unit in Policy Innovation and Evaluation, a collaboration between the LSHTM, the Care Policy Evaluation Centre at the London School of Economics and Political Science, and University of Glasgow. We develop rigorous research evidence to support innovation in health and social care policy across England.

Recent and ongoing projects include collaborative implementation research to inform and support scale up of the Primary Health Integrated Care Project for Chronic Conditions (PIC4C) in Kenya and NIHR Global Health Research Group on Improving Hypertension Control in Rural Sub-Saharan Africa (IHCoR Africa) with colleagues at KEMRI-Wellcome Trust and MRC Gambia.

We recently completed research to better understand the role of health system factors and international variation in cancer survival as part of the International Cancer Benchmarking Partnership. I also led work synthesising evidence to support the development of person-centred health systems, examining perspectives on 'person-centredness' from the different roles people take in health systems, as individual service users, care managers, taxpayers or active citizens.