Breese Davies received her B.A., M.A. (Criminology) and LL.B. degrees from the University of Toronto. She practices criminal law at both the trial and appellate levels. She started her legal career as an associate with Ruby & Edwardh and was a partner at Di Luca Copeland Davies LLP for 4 years. Breese is now a sole practitioner in Toronto.
Breese was involved in the Inquiry into the Actions of Canadian Officials in relation to Maher Arar, the Internal Inquiry into the Actions of Canadian Officials in relation to Abdullah Almalki, Ahmad Abou-Elmaati and Muayyed Nureddin and the Inquiry into Pediatric Forensic Pathology in Ontario. She is currently counsel for the Canadian Association of Elizabeth Fry Societies in the Inquest into the Death of Ashley Smith
Breese is one of the authors of Sentencing (7th edition, with C. Ruby, D. Doucette, S. Loosemore, J. Orkin and C. Wawzonek, 2008) and On Children and the Law (with J. Wilson). Breese serves as an Assistant Editor of the Canadian Rights Reporter and as co-editor of For the Defence magazine published by the Criminal Lawyers Association. She is an adjunct professor of Criminology at the University of Toronto and teaches in the part-time LL.M program at Osgoode Hall Law School. Breese has done volunteer legal work in Nigeria through Avocats sans frontiers Canada.