2 The background to the dispute is set out in the reasons of both the primary judge and Young JA (who delivered the substantive reasons of the Court on appeal). The following suffices for present purposes.
3 In early 2003, the applicant's husband, Mr Thambiappah Satchithanantham, was an undischarged bankrupt. He and the applicant had owned their home at Westmead. His interest was then held by his trustee in bankruptcy. The judgments do not disclose the precise interest held by him before his bankruptcy. The home was apparently worth something over $800,000. There was an existing home loan facility secured over the property under which both Mr and Mrs Satchithanantham were indebted. The creditor was Bankwest. At the time of the settlement of the transaction in question with the respondent (the NAB), Bankwest was owed $361,469.82. Bankwest had been threatening to take proceedings under its security. The trustee in bankruptcy had offered to transfer the interest in the property of Mr Satchithanantham to Mrs Satchithanantham for $25,000.
4 Mr Satchithanantham arranged for the NAB to lend $680,000. Given that he was an undischarged bankrupt, the loan was to be made to the applicant.
5 The loan and security transaction were entered. The NAB advanced $680,000 to the applicant in April 2003. She thought the loan was a home loan for $400,000. It was not.
6 The primary judge's reasons disclose sufficient facts to reveal what can be described as the less than prudent banking approach to the transaction by the NAB. The NAB knew, for instance, that Mr Satchithanantham was an undischarged bankrupt and that the applicant was in receipt of Centrelink payments. (The Satchithanantham's son is severely disabled.) The primary judge's reasons also disclose that the bank was given facts about the rental income of the property by Mr Satchithanantham that were less than accurate. The primary judge concluded that the NAB engaged in "pure-asset lending", that is "to lend money without regard to the ability of the borrower to repay … in the knowledge that adequate security is available in the event of default": Perpetual Trustee Company Limited v Khoshaba [2006] NSWCA 41; (2005) 14 BPR 26,639 at [128].
7 On 6 February 2009, the primary judge concluded that Mrs Satchithanantham was subject to the undue influence of her husband, but her Honour rejected claims by the applicant that the NAB was privy to that undue influence. The primary judge also rejected relief (a) under the principles in Yerkey v Jones [1939] HCA 3; 63 CLR 649, (b) for unconscionable conduct and (c) under the Trade Practices Act 1974 (Cth). The primary judge did, however, find the contract unjust under the Contracts Review Act 1980 (NSW). Central to this finding was the undue influence of Mr Satchithanantham and the absence of appreciation by the applicant that the loan was anything other than a refinancing of the Bankwest home loan.
8 On 6 February 2009 the primary judge made orders varying the loan agreement so as to operate as if the amount advanced on 16 April 2003 had been $408,665.86. This sum was derived from the disbursement authority on 15 April as follows: