He is an internationally recognized expert in the treatment of lung cancer, mesothelioma and thymoma. His research interests include identification and validation of biomarkers that influence thoracic tumour development and treatment, as well as the development of novel therapeutic strategies for the treatment of thoracic tumours through clinical trials.

He Chairs the British Thoracic Oncology Group (BTOG), and is immediate past Chair of the Advanced Diseases Sub-group of the UK NCRI Lung Cancer Clinical Studies Group. He has been elected onto the Foundation Council of the European Thoracic Oncology Platform (ETOP), and is active in the European Organization for Research and Treatment of Cancer (EORTC) Lung Group- where he leads the EORTC 08114 (GEM) and 08112 (NEMO) studies- and the International Thymic Malignancy Interest Group (ITMIG).