Multiservice Book Binding v Marsden [1978] 2 All ER 489
Facts
A company borrowed money for its business on the security of a mortgage. The agreement linked the amount repayable to the Swiss franc, providing the lender with protection against a fall in the value of sterling. When exchange rates moved, the amount required to redeem became substantially more burdensome for the borrower. It challenged the currency provision as an objectionable term of the mortgage. The dispute therefore concerned a commercially agreed allocation of currency risk, rather than a lender refusing redemption altogether or demanding a new advantage which the borrower had never agreed to provide.
Legal Issue
Was the Swiss-franc repayment provision an invalid clog on redemption or an unconscionable mortgage term merely because exchange-rate movements made repayment more expensive?
Held
The High Court upheld the currency provision. Browne-Wilkinson J distinguished a harsh financial outcome from an unconscionable bargain in the equitable sense. The parties had agreed how the debt would be measured, and the later movement in currency values did not itself show improper advantage-taking when the bargain was made. Nor did the provision prevent redemption: it formed part of the amount contractually due on redemption. Equity did not supply a general power to rewrite a commercial mortgage merely because its terms had proved disadvantageous. The circumstances of negotiation and the nature of the obligation mattered more than the size of the later increase alone.
⭐ Legal Principle
A mortgage term is not unconscionable merely because it is onerous or turns out badly for the borrower. Equity examines whether the bargain involves improper advantage-taking and whether the term impermissibly obstructs redemption; a commercially agreed currency clause need not do either.
Significance
The decision helps distinguish the equitable control of mortgage terms from a free-standing review of financial fairness. It also separates defining the secured debt from preventing its repayment. Its commercial setting is important: the case does not establish that every currency-linked loan is enforceable regardless of misrepresentation, undue influence or statutory protection. Modern consumer lending questions require the relevant legislation and regulatory framework as well as the historical equitable principle.
Common exam questions about this case
Why was the currency clause not necessarily a clog on redemption?
It defined the sum the borrower had undertaken to repay rather than denying the right to redeem after payment of the secured obligation. The fact that exchange rates increased that sum did not itself turn the clause into an impermissible restriction on redemption or a separate continuing burden.
Does an expensive bargain become unconscionable retrospectively?
An adverse outcome alone is insufficient. The equitable inquiry concerns the character of the transaction and any improper advantage-taking, assessed in its circumstances. A borrower cannot establish unconscionability simply by showing that a risk which was expressly allocated in the agreement later materialised to its financial disadvantage.
How should the case be used in a modern consumer-loan problem?
Identify its narrow equitable reasoning, then consider the legislation and other doctrines actually engaged by the facts. The case concerned a commercial mortgage and does not displace consumer protections or claims based on misrepresentation and undue influence. A conclusion based solely on the loan’s commercial wording would be incomplete.