The appellants were consulting engineers who held professional indemnity insurance policies with Aegis Insurance Company Limited (whose rights and obligations were assumed by the respondent, Santam Limited). Two relevant policies were issued: (1) the 1991 policy covering 1 March 1991 to 29 February 1992, and (2) the 1993 policy covering 1 March 1993 to 28 February 1994. Both were 'claims made' policies.
In May 1991, the appellants became aware that Samancor Limited contended they may have breached their obligations in supervising the construction of a water pipeline that had corroded. On 4 June 1991, the appellants gave written notice to the insurer (via Glenvaal) of a potential claim, stating expressly that the letter served only as notification of a possible claim.
In November 1993, during the currency of the 1993 policy, Samancor instituted action against the appellants claiming damages for breach of contract in failing to properly supervise the pipeline construction. The trial court granted judgment in favor of Samancor, and a subsequent appeal to the Supreme Court of Appeal was dismissed. The appellants' total liability to Samancor was R3,646,050.58.
The 1993 policy provided more extensive cover than the 1991 policy. Both policies provided R1,000,000 indemnity for damages and claimant's costs, but the 1991 policy included the insured's own defense costs within the R1,000,000 limit, while the 1993 policy provided for these costs in addition to the R1,000,000 limit. The respondent paid R2,072,292.48 in defense costs but contended that only the 1991 policy applied, or alternatively, that its obligations under the 1993 policy had been discharged.