American Natural Soda Ash Corp and CHC Global (Pty) Ltd v Botswana Ash (Pty) Ltd and Others

The appellants (American Natural Soda Ash Corp - 'Ansac' and CHC Global) faced complaint proceedings before the Competition Tribunal brought by the Competition Commission, alleging that Ansac was a cartel under section 4 of the Competition Act 89 of 1998 and guilty of predatory pricing under section 8(d)(iv). Botswana Ash (Pty) Ltd ('Botash') intervened in these proceedings. During settlement negotiations between Ansac and the Competition Commission, conducted on a 'without prejudice' and confidential basis, Ansac specifically stipulated that discussions must not be revealed to Botash. Darryl Dingley, an employee of the Competition Commission who had participated in the settlement negotiations and developed a financial model for penalty assessment, left the Commission's employ before the settlement agreement was signed. In October 2005, Dingley joined Webber Wentzel Bowens ('Webbers'), the law firm representing Botash. In February 2006, he was assigned to Botash's legal team for the same complaint proceedings. Ansac discovered this in June 2006 and applied to the Competition Tribunal to disqualify both Botash from continuing as interveners and Webbers from continuing to represent Botash. The Tribunal dismissed the application, and Ansac appealed.

• Whether Webbers should be disqualified from representing Botash on the ground of 'side switching' - where a lawyer moves from representing a regulator to representing a private party with allegedly different interests in the same proceedings
• Whether Webbers should be disqualified on the ground of breach of confidentiality - having assigned to the legal team a person privy to confidential 'without prejudice' settlement negotiations
• Whether Webbers should be disqualified because Dingley might be called as a material witness regarding the validity of the settlement agreement
• Whether the appellants' rights to a fair hearing under section 34 of the Constitution were violated by Dingley's participation in Botash's legal team
• What evidential standard must be met by a party seeking disqualification of opposing counsel

The appeal was dismissed with costs, including costs of two counsel. The Competition Tribunal's decision refusing to disqualify Botash as intervener and Webbers as its legal representatives was upheld.

A party seeking disqualification of opposing counsel on grounds of breach of confidentiality or conflict of interest must provide specific evidential foundation demonstrating what confidential information is at risk and how it could prejudice the applicant's case. Generalized claims of confidentiality without particularization are insufficient to justify the drastic remedy of disqualification. Where a legal professional moves from employment with a regulatory body to representing a private party whose interests are substantially aligned with that regulator in the same proceedings, this does not constitute impermissible 'side switching' where the professional never represented the opposing party and remained on the adversarial side throughout. Relief seeking disqualification of legal representatives must be balanced against the opposing party's constitutional right under section 34 to choose its own legal representatives and to a fair hearing, particularly where proceedings have been ongoing for substantial periods. The court applying the Plascon-Evans rule must refuse disqualification relief where the applicant has not discharged the onus of establishing, on the facts presented, that confidential information relevant to the case was communicated to and retained by the allegedly conflicted person.

The court observed that the appointment of Dingley to the legal team 'may well be the kind of ethical matter which requires the attention of the Law Society' but emphasized this was distinct from the legal question of whether disqualification should be ordered. The court noted that under South African law, there is no absolute bar against derivative use of unlawfully obtained information, citing Ferreira v Levin and Shaik v Minister of Justice, where the Constitutional Court opted for direct use immunity with judicial discretion to exclude derivative evidence if necessary for a fair trial. The court expressed sympathy for the principle that clients should have complete confidence that communications with lawyers remain secret, quoting Lord Millett in Prince Jefri Bolkiah v KPMG, but distinguished that case factually. Davis JP observed that when Ansac entered settlement negotiations with the Competition Commission, it 'effectively consented to certain information being employed in litigation in the event that the settlement talks would not be successful' and there was no dispute the Commission could employ such information in continuing litigation. The court noted the proceedings had been 'characterized by delays and ferocious point taking and scoring', suggesting judicial frustration with the conduct of the litigation.

This case establishes important principles regarding legal ethics and disqualification of legal representatives in South African competition law proceedings. It clarifies that: (1) 'side switching' principles developed for lawyers moving between opposing clients do not automatically apply where movement is between parties with aligned interests on the same side of litigation, even if one is a regulator and the other a private party; (2) applications for disqualification based on alleged breach of confidentiality require specific evidential foundation beyond generalized claims - applicants must provide concrete evidence of confidential information at risk; (3) courts will balance competing section 34 constitutional rights to fair hearing, recognizing that disqualification of chosen counsel itself impacts the opposing party's constitutional rights; (4) remedies that would substantially prejudice a party's ability to conduct litigation after years of proceedings require strong justification; (5) intervention by private parties in competition proceedings brought by the Competition Commission does not necessarily create such divergent interests as to trigger side-switching prohibitions. The case demonstrates judicial reluctance to grant disqualification orders without clear evidence of actual prejudice or significant risk thereof, particularly where such orders would themselves cause substantial prejudice to the other party.