Professor Keyoumars Ashkan is a leading neurosurgeon and one of the handful of neurosurgeons in London to be awarded a professorship. He practices at various top London clinics and hospitals including King's College Hospital, the London Neurosurgery Partnership, Harley Street Clinic, Cromwell Hospital and New Malden Diagnostic Centre. He has a special interest in functional neurosurgery; image-guided minimally invasive surgery; spine disease; and brain and spinal tumour surgery. He is actively involved in research, especially in developing new treatments for brain tumours and for Parkinson's disease. He is the UK Lead for the Genomics England programme for brain tumours; president of the British Society for Stereotactic and Functional Neurosurgery; chairman of the Neurosurgery Section of the International Parkinson and Movement Disorder Society, chair of King's Neuroscience Clinical Trial Unit; and deputy lead for King's Neuroscience Research & Innovation Committee. He has published over 350 peer review papers, abstracts and book chapters and is an associate editor and reviewer for several journals. He has been awarded numerous prestigious fellowships and prizes and plays an integral role in myriad professional bodies.