My main interest and expertise is in health 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. A parallel strand of work has involved advancing the development of metrics to assess the impact of health systems on population health, in particular around avoidable mortality. I currently lead a project that seeks to better understand the role of health system factors and international variation in cancer survival as part of the International Cancer Benchmarking Partnership.