Dr Steve Walker is an NIHR Clinical Senior Lecturer in Respiratory Medicine.  His main research interest is the management of pleural effusions and pneumothorax.  He has published extensively and is leading several studies in the field. He is the junior chair of European Respiratory Society (ERS) guideline on pneumothorax and was on the guideline committee for the British Thoracic Society Pleural Disease Guidelines 2023. He is co-chair of the ERS Pleural Clinical Research Collaborations.