Professor Chung is a Professor of Respiratory Medicine at Imperial College (National Heart & Lung Institute). He is also an Honorary Consultant at the Royal Brompton Hospital NHS Trust, and a Principal Investigator of its Biomedical Research Unit. He is an Investigator of the MRC/Asthma UK Centre on allergic mechanisms of Asthma, MRC/EPA Centre on Environment and Health and of the EU/EFPIA UBIOPRED project on systems biology of Severe Asthma. He is also a Fellow of the National Institute of Health Research in the UK NHS.

Professor Chung trained as a  respiratory physician and researcher, and currently heads the Experimental Studies Unit at National Heart and Lung Institute, Imperial College. His major research interest encompasses chronic airflow obstruction in severe asthma and COPD, focusing particularly on the inflammatory and remodelling processes that involves airway smooth muscle and lung macrophages with a particular focus on oxidative mechanisms. In addition, he has an interest in the pulmonary toxic effects of ultrafines and nanoparticles. However, chronic cough remains an area of interest as a chronic cough hypersensitivity syndrome, and he is keen to find new targets for therapy for the control of chronic cough with antitussives, with the starting hypothesis that inflammatory and remodelling processes may contribute to this chronic cough hypersensitivity syndrome. Professor Chung has been co-chairing the 2-yearly International Symposia on Cough for the past 10 years.