Regan first studied at the Robert Gordon University, where she successfully completed her BA Law and Management and attained a First Class LLB (Hons), followed by a LLM in European Energy and Climate Law specialisation at the University of Groningen and a Diploma of Legal Practice at the University of Strathclyde. Following some professional practice in Scotland and Singapore, and teaching European Environmental Land Law and Delict, Regan is now entering the legal practice as a trainee solicitor in Scotland.