Nutri-Flo, a fertiliser company, lodged a complaint with the Competition Commission using form CC1, supported by an extensive affidavit. The complaint expressly alleged abuse of dominance by Sasol Chemical Industries Ltd, relying on excessive, exclusionary and discriminatory pricing, which constitute contraventions of sections 8(a), 8(c) and 9(1) of the Competition Act 89 of 1998. Within the affidavit, there were limited references suggesting possible cartel conduct involving Sasol, Yara South Africa (Pty) Ltd and Omnia Fertilizer Ltd, but these were not framed as a distinct complaint. After investigating, the Commission referred the matter to the Competition Tribunal and included, in addition to the abuse of dominance allegations against Sasol, a new allegation of cartel conduct under section 4(1)(b)(i) against all three firms. The respondents objected, contending that the cartel allegation had not been properly initiated as a complaint under section 49B. The Competition Appeal Court previously held that the Commission lacked power to add a new cartel complaint not contained in the original complaint. The present proceedings concern the Commission’s application for leave to appeal that decision to the Supreme Court of Appeal, following a referral from the Constitutional Court.