- NIHR National Director for Dementia Research
- Professor of Clinical Neurology
- Consultant Neurologist at the National Hospital for Neurology and Neurosurgery

Professor Rossor's research interests include novel neuroimaging methods for diagnosis and monitoring of neurodegenerative disease and neuropsychological descriptions of degenerative dementias. He has also been involved in a number of clinical trials and collaborative studies on molecular genetics of the neurodegenerative diseases.