University College London - Institute of Health Informatics, University College London - Institute of Health Informatics, University College London - Institute of Health Informatics, London School of Hygiene & Tropical Medicine - Department of Non-Communicable Disease Epidemiology, Imperial College London - National Heart and Lung Institute, Imperial College London, BioPharmaceuticals Medical, AstraZeneca - Medical and Scientific Affairs, BioPharmaceuticals Medical, AstraZeneca - Medical and Scientific Affairs, Keele University - Research Institute for Primary Care and Health Sciences, University of Bristol - Department of Population Health Sciences, University of Leicester - Leicester Diabetes Centre, Health Data Research UK, Health Data Research UK - BHF Data Science Centre, University College London - Institute of Health Informatics and University College London - Institute of Health Informatics