Annabelle graduated from University College Medical School, London in 1992 having obtained a first class degree and prizes for her research on the neuroendocrinology of sleep deprivation. She also received a certificate of merit for Obstetrics and Gynaecology and Clinical Pharmacology. She subsequently trained in psychiatry at the Royal Free Hospital & University College rotations.

She obtained her full membership of The Royal College of Psychiatrists in 2000, and subsequently joined the Maudsley Specialist Training programme. She is a member of The Royal College of Psychiatrists, British Association of Psychopharmacology and The American Neuropsychiatric Association.

Annabelle is coordinating the R&D programme at The London Sleep Centre with emphasis on audit, clinical research and clinical trials.