The appellants, Netstar, Matrix and Tracker, were the three largest providers of stolen vehicle recovery (SVR) systems in South Africa. Together with other firms, they participated in the SVR Committee of the Vehicle Security Association of South Africa (VESA). VESA accreditation was crucial because most short-term insurers, through the South African Insurance Association (SAIA), only granted insurance premium discounts for vehicles fitted with VESA-accredited SVR systems. Between about 1998 and 2003, VESA accreditation depended on performance-based criteria, including a minimum of 3 000 fitted units, at least one year of operation, a minimum of 100 vehicle recoveries, and an industry-average recovery rate. New entrants were unable to meet these criteria and therefore could not obtain VESA accreditation. Tracetec, a smaller competitor, complained to the Competition Commission that the appellants had collectively agreed on and maintained these criteria in contravention of s 4(1)(a) of the Competition Act 89 of 1998, alleging that they substantially prevented or lessened competition by excluding new entrants. The Competition Tribunal upheld the complaint and issued a declaratory order against the appellants, leading to these appeals.