Two merger notifications relating to acquisitions within the Anglo corporate group were filed with the Competition Commission, which recommended unconditional approval. During prehearing conferences before the Competition Tribunal, a single Tribunal member (the second respondent) made several procedural rulings: allowing the Industrial Development Corporation (IDC) to intervene, defining the scope of its intervention, granting it access to confidential documents, and appointing an expert economist to assess the merger. The merging parties appealed and sought review in the High Court, contending that these rulings were made ultra vires the Competition Act 89 of 1998 and in breach of procedural fairness.