Honorary consultant neurosurgeon Oxford Radcliffe University hospital Honorary senior lecturer, University of Oxford. Co-Principal Investigator in the MRC funded International Subarachnoid Aneurysm Trial (ISAT), the results leading to a global change in management. Elected to the Council of the Society of British Neurological Surgeons (SBNS) in 2003; President-Elect in 2013 taking up office of President of the SBNS from September 2014. Elected to council The Royal College of Surgeons of England in 2013; re-elected in 2019. Chair of the RCS Eng sponsored Independent Commission on the Future of Surgery, published in November 2018.