Transnet Limited (appellant) instituted action against Newlyn Investments (Pty) Limited (respondent) for eviction from immovable property known as the Pinetown PX situated at Kirk Road, Pinetown. Transnet owned the property which had been leased to the respondent under a written lease agreement dated 12 November 1996, extended to 31 December 2005. The respondent claimed a contractual right to occupy based on an addendum to the written lease that allegedly granted two successive renewal options of nine years and eleven months each. The original addendum could not be produced. A forged document purporting to be the addendum was discovered, which the respondent admitted was a forgery. The respondent relied on the oral evidence of four witnesses (Mashinini, Silungwe, Garach, and Balmakhun) and contemporaneous documentation to prove that a genuine addendum had been concluded in November 2002, the terms of which were identical to the forged document. Both parties had spent substantial amounts (appellant on roof repairs, respondent on cladding and improvements) based on their understanding that the lease would be extended. The lease contained a non-variation clause requiring written amendments signed by both parties.