Optivest Health Services (Pty) Ltd, an accredited medical schemes broker under the Medical Schemes Act 131 of 1998, was the subject of an investigation initiated by the Registrar of the Council for Medical Schemes following an anonymous tip-off from a former employee. The tip-off alleged that Optivest unlawfully charged service fees to medical scheme members, including so‑called "orphan" profiles where members continued to pay fees despite no longer belonging to a medical scheme. Acting on a report from its Compliance and Investigation Unit, the Registrar appointed Open Water Advanced Risk Solutions (Pty) Ltd in terms of s 44(4) of the Act, read with the Financial Sector Regulation Act 9 of 2017, to conduct an inspection without prior notice. Optivest initially cooperated but later withdrew cooperation and challenged the Council’s authority to investigate it as a broker. Optivest instituted review proceedings to set aside the decision to investigate, the appointment of Open Water, and the draft investigation report, alleging lack of statutory power, procedural unfairness, and irrationality.