Engen Petroleum Limited, a licensed wholesaler, and The Business Zone 1010 CC (Business Zone), a licensed retailer, were parties to lease and supply agreements relating to an Engen-branded service station. After redevelopment of the site and amendments to the lease, disputes arose concerning unauthorised alterations by Business Zone, alleged failures by Engen to provide additional access points, and Engen’s cancellation of the lease. Engen cancelled the lease in October 2010 for breach and later terminated an interim supply arrangement. Business Zone alleged that Engen’s conduct constituted unfair or unreasonable contractual practices and requested the Controller of Petroleum Products to refer the dispute to arbitration under section 12B of the Petroleum Products Act 120 of 1977. The Controller refused, holding that there was no existing valid agreement and that the matter was sub judice. An internal appeal to the Minister failed. Business Zone successfully reviewed those decisions in the High Court, which set them aside and itself referred the disputes to arbitration. Engen appealed to the Supreme Court of Appeal.