“Undue influence requires transaction shown to be manifestly disadvantageous to complainant”
The Court of Appeal held that manifest disadvantage must be shown for both actual and presumed undue influence. The appeal was dismissed: although actual undue influence by the husband was established, the transaction was not manifestly disadvantageous to Mrs Aboody, so her claim failed and the bank could enforce the charge.
Mrs Aboody charged her share in the matrimonial home to BCCI to secure loans to her husband's company. She had limited understanding of the transactions and signed documents without independent legal advice. The bank knew she was acting as surety for her husband's debts. When the company failed, the bank sought to enforce the charge and Mrs Aboody claimed undue influence.
Whether a wife who charged property to secure her husband's business debts was subject to undue influence, and what requirements must be satisfied to establish undue influence.
The Court of Appeal, led by Slade LJ, established that manifest disadvantage is a necessary element for both actual undue influence (Class 1) and presumed undue influence (Classes 2A and 2B). In assessing manifest disadvantage, the court weighed the seriousness of the risk of enforcement to the giver, in practical terms, against the benefits gained by the giver in accepting the risk. The court found Mrs Aboody had been subject to her husband's actual undue influence, but the transaction was not manifestly disadvantageous: her shareholding in the company and the reasonable chance of its survival, from which she stood to benefit substantially, counterbalanced the liabilities she undertook. Her claim therefore failed and the bank was entitled to enforce the charge.
This case established manifest disadvantage as essential to undue influence claims, a requirement later overruled by the House of Lords in CIBC Mortgages v Pitt [1994]. It was an important step in developing the doctrine of undue influence in surety cases.
The ratio is that to establish undue influence (whether actual or presumed), the complainant must demonstrate that the transaction was manifestly disadvantageous to them. This requirement applied to both Class 1 (actual) and Class 2 (presumed) undue influence.
The Court of Appeal found that Mrs Aboody had been subject to her husband's actual undue influence when charging her property interest, but dismissed her claim because the transaction was not manifestly disadvantageous to her: her shareholding in the company and the reasonable chance of its survival offset the risks she undertook, so the bank could enforce the charge.
The case was significant for establishing manifest disadvantage as a requirement for undue influence claims, particularly in wife surety cases. However, this requirement was later overruled by the House of Lords in CIBC Mortgages v Pitt [1994] regarding actual undue influence.
The court suggested that wives who provide security for husbands' debts should receive independent legal advice, though this was not made a strict requirement.
OSCOLA Citation
Bank of Credit and Commerce International SA v Aboody [1990] 1 QB 923 (CA)
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[2026] UKSC 1
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