Ascot Investments Pty Ltd v Harper

The High Court of Australia considered an appeal concerning a dispute between Ascot Investments Pty Ltd and the respondents, Mr. and Mrs. Harper. The core of the disagreement involved the validity of a mortgage granted by the Harpers to Ascot Investments, which the Harpers sought to have set aside.

The central legal question before the High Court was whether the mortgage was voidable due to undue influence or unconscionable conduct on the part of Ascot Investments. Specifically, the court had to determine if the circumstances surrounding the execution of the mortgage were such that it would be inequitable to allow Ascot Investments to retain the benefit of it, particularly given the Harpers' reliance on the advice of their solicitor, who was also acting for Ascot Investments.

The High Court ultimately found that the mortgage was voidable. The court applied principles of equity, particularly concerning undue influence and unconscionable dealing. It was held that the dual representation of both parties by the same solicitor created a situation where the Harpers' interests were not adequately protected, and they were susceptible to undue influence. The court emphasised that where a party is in a position of vulnerability and the other party benefits from that vulnerability through an unconscionable transaction, equity will intervene to set aside the transaction.

The High Court ordered that the mortgage be set aside, with the effect that Ascot Investments was not entitled to enforce it against the Harpers.