“… where A’s money is used to pay off the claim of B, who is a secured creditor, A is entitled to be regarded in equity as having had an assignment to him of B’s rights as a secured creditor … [subrogation] finds one of its chief uses in the situation where one person advances money on the understanding that he is to have a certain security for the money he has advanced, and, for one reason or another, he does not receive the promised security. In such a case he is nevertheless to be subrogated to the rights of any other person who at the relevant time had any security over the same property and whose debts have been discharged, in whole or in part, by the money so provided by him, but of course only to the extent to which his money has, in fact, discharged their claim.”
“The Advance will only be made when the Property has been vested in the Borrowers and the Mortgage Deed, Mortgage of Life Policy and any other necessary documents have been properly executed.”
“(i) Equity operates on the conscience of the owner of the legal interest. In the case of a trust, the conscience of the legal owner requires him to carry out the purposes for which the property was vested in him (express or implied trust) or which the law imposes on him by reason of his unconscionable conduct (constructive trust). (ii) Since the equitable jurisdiction to enforce trusts depends upon the conscience of the holder of the legal interest being affected, he cannot be a trustee of the property if and so long as he is ignorant of the facts alleged to affect his conscience, i.e. until he is aware that he is intended to hold the property for the benefit of others in the case of an express or implied trust, or, in the case of a constructive trust, of the factors which are alleged to affect his conscience. (iii) … (iv) Once a trust is established, as from the date of its establishment the beneficiary has, in equity, a proprietary interest in the trust property, which proprietary interest will be enforced in equity against any subsequent holder of the property (whether the original property or substituted property into which it can be traced) other than a purchaser for value of the legal interest without notice.”
“Applying the Cleadon case to the present facts, I regard it as authority for the proposition that, in the absence of authorisation or ratification by the company of the bank’s payment to the third party, the “mere fact” that the bank’s payment enured to the benefit of the company does not establish an equity in favour of the bank against the company. Moreover, even upon Wright J’s formulation in the Liggett case, in order to establish the equity, the bank would have to show that the payment discharged (at least partially) a legal liability of the customer. In the absence of evidence that the bank’s payment has been made on the customer’s behalf or subsequently ratified by him, the payment to the creditor will not of itself discharge the company’s liability to the creditor. … it is not established in this case the company’s legal liability to the company’s creditor had been discharged by the voluntary payment by the bank.”
“Equity lawyers speak of a right of subrogation, or of an equity of subrogation, but this merely reflects the fact that this is not a remedy which the court has a general discretion to impose whenever it thinks it just to do so. The equity arises from the conduct of the parties on well settled principles and in defined circumstances which make it unconscionable for the defendant to deny the proprietary interest claimed by the plaintiff. A constructive trust arises in the same way. Once the equity is established the court satisfies it by declaring that the property in question is subject to a charge by way of subrogation in the one case or a constructive trust in the other.”
“Four questions arise. (1) [have the second defendants] benefited or been enriched? (2) was the enrichment at the expense of [the plaintiffs]? (3) was the enrichment unjust? (4) are there any defences?”
“In my opinion this submission is invalid because it fails to take account of the consideration that the doctrine of subrogation applies in a variety of different circumstances where the defendant has been unjustly enriched at the expense of the plaintiff, and where equity considers that it would be unconscionable for the defendant to retain that enrichment. In such a case, as Goff and Jones say, the remedy is fashioned to the facts of the particular case. In the Orakpo case[1978] AC 95 , 104E Lord Diplock stated that some rights by subrogation “appear to defeat classification except as an empirical remedy to prevent a particular kind of unjust enrichment.”
“It is available in a wide variety of different factual situations in which it is required in order to reverse the defendants’ unjust enrichment.”
“Fifthly, although the classic case of subrogation involves a lender who expected to receive security (in the proprietary sense – e.g. a mortgage) claiming subrogation to another security, it can apply to personal rights. In Re Wrexham, Mold and Connah’s Quay Railway Co[1899] 1 Ch 440 at 458, Vaughan Williams LJ referred to the claim for subrogation being to “the rights of the creditor who has been paid off”, and does not appear to have limited those rights to proprietary rights.”
“The facts of Banque Financière were without precedent. They are unlikely to be repeated. We doubt if reference to that decision is likely to be of assistance in a conventional case, such as that with which we are concerned. … Banque Financière demonstrates the flexibility of the doctrine of subrogation, but it would be a mistake to attempt to apply the decision like a straightjacket.”