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I studied mathematics at King's College Cambridge, followed by a Masters degree in Medical Statistics at the University of Leicester. I then moved to London to begin a PhD at LSHTM under the supervision of James Carpenter, which was awarded in 2007. For the next 7 years I worked in Australia, beginning at the NHMRC Clinical Trials Unit at Sydney University, then moving to the Murdoch Childrens Research Institute in Melbourne, followed by positions at Monash University and the University of Melbourne. In 2014, I returned to LSHTM. Since then, my work has focused on the use of electronic health records data for health research. Initially, the work focused on missing data within causal analyses. During the COVID-19 pandemic, I was involved in the OpenSAFELY collaborative, a new platform for linked primary care record data, and contributed to using these data to answer a number of urgent health related questions through the pandemic. Since then, my methodological interests have broadened to encompass statistical challenges of both causal analyses and risk prediction using data from electronic health records.