Dr Guy Leschziner is a neurologist with special expertise in sleep disorders and epilepsy.

Dr Leschziner is Consultant Neurologist at London Bridge Hospital and Clinical Lead for the Sleep Disorders Centre at Guy's and St Thomas' Hospital, London, one of the largest sleep units in Europe. He also practices at London Bridge Hospital and the Cromwell Hospital

He is also Reader in Neurology at the Department of Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London.

Under the broad umbrella of sleep disorders, Dr Leschziner is a particular authority on narcolepsy, sleepwalking, Kleine-Levin syndrome and restless legs syndrome.

Dr Leschziner is also enthusiastically engaged with public education through a wide range of media work. He presented a popular radio series for the BBC, Mysteries of Sleep, as well as The Secrets of Sleep for Channel 4 television in the UK. He has also been an expert commentator for BBC News and The Guardian.

Dr Leschziner is also the author of the book The Nocturnal Brain: Nightmares, Neuroscience and the Secret World of Sleep.