Business Zone, a licensed petroleum retailer, operated a service station under lease and supply agreements with Engen, a licensed petroleum wholesaler. An addendum required Engen to provide upgraded premises and additional access points. Disputes arose when Engen allegedly failed to provide the access points and later purported to cancel the lease, alleging unauthorised alterations and later the sale of foreign petroleum products. Business Zone contended that Engen’s conduct constituted unfair or unreasonable contractual practices under section 12B of the Petroleum Products Act and sought referral to arbitration. The Controller of Petroleum Products and, on appeal, the Minister refused the referral, reasoning that the contract had been cancelled and that a single act of cancellation could not constitute a contractual practice. Business Zone successfully reviewed those decisions in the Pretoria High Court, but the Supreme Court of Appeal reversed that decision. Business Zone then appealed to the Constitutional Court.