Sian studied medicine and graduated from the Hull York Medical School in 2011. She has a long-standing interest in global health and health inequalities in the areas of child and maternal health. After completing foundation training in the Yorkshire and Humber Deanery she spent a year working at Public Health England as a Faculty of Medical Leadership and Management (FMLM) National Medical Director’s Clinical Leadership and Management Fellow. Here she contributed to research in the area of utero transmission to chronic hepatitis B infection in infants and effectiveness of antivirals during pregnancy in preventing perinatal transmission. She led on the preparation of the first global health strategy for the health and wellbeing directorate. During this time she also contributed significantly to the national public health response and leadership to the West African Ebola outbreak. From 2015, Sian undertook an NIHR Academic Clinical Fellowship in Primary Care alongside completing clinical training to become a General Practitioner. Sian studied secondhand smoke exposure during pregnancy using a cross-sectional analysis of data from Demographic and Health Survey from 30 low- and middle-income countries with the Department of Health Sciences at the University of York. During this time, Sian was awarded a Masters in Public Health from the London School of Hygiene and Tropical Medicine. Sian also has significant experience in the third sector working with an award winning international children’s charity, Students for Kids International Projects. Some of her work has included the development of sustainable community based projects in Tanzania aimed at improving the health, education and welfare of vulnerable children. From 2014-2018 she chaired the charity’s board of trustees and was responsible for their overall strategic vision and organisational development.