Professor Rossor graduated from Jesus College, Cambridge and Kings College Hospital Medical School London. He trained in Neurology at the National Hospital, Queen Square and undertook research into the neurochemistry of degenerative disease at the MRC neurochemical pharmacology unit in Cambridge.
He is the NIHR National Director for Dementia Research, Director of the NIHR Queen Square Dementia Biomedical Research Unit and a NIHR Senior Investigator.
He is honorary consultant neurologist at the National Hospital for Neurology and Neurosurgery where he established the specialist cognitive disorders clinic which acts as a tertiary referral service for young onset and rare dementias. Clinical research interests are in neurodegenerative disease and particularly in familial disease.