For the appellant the case of Hughes v Metropolitan Railway Co was cited, and in particular the language of Lord Cairns LC. 'It is the first principle upon which all Courts of Equity proceed, that if parties who have entered into definite and distinct terms involving certain legal results-certain penalties or legal forfeiture-afterwards by their own act or with their own consent enter upon a course of negotiation which has the effect of leading one of the parties to suppose that the strict rights arising under the contract will not be enforced, or will be kept in suspense, or held in abeyance, the person who otherwise might have enforced those rights will not be allowed to enforce them where it would be inequitable having regard to the dealings which have thus taken place between the parties.' In that case the negotiations referred to had taken place after the giving of a notice requiring the doing of an act, but before the expiration of the period within which the act was required to be done. No actual default, therefore, had been then committed. The respondents contended that this doctrine has no application to a case where default has already been committed. The language of the Lord Chancellor is not in terms limited to the case where the negotiations precede default, but it must, no doubt, be read with reference to the facts with which he was dealing. This case was cited to the Court in Williams v Stern, and it is to it, no doubt, that Cotton LJ referred to in his judgment. In Tommey v White, the assignees under a deed executed by a debtor in trust for his creditors were empowered to sell his house and business after three months' notice. Notice was given, but afterwards it was agreed at a meeting of the trustees and creditors that it should be considered as abandoned, and it was held that a sale in pursuance of it was unauthorized and unlawful. In this case the agreement was within the three months. We are by no means satisfied that the doctrine stated by Lord Cairns is limited to cases in which the so-called waiver takes place before the occurrence of actual default. In reason, the unfairness to the party who is induced to suppose that the strict rights of the other party will not be enforced is just as likely to occur in one case as in the other. In either case there must be something in the nature of what is called a consideration. As Sir W. Grant said in Stackhouse v Barnston: 'A waiver is nothing; unless it amount to a release. It is by a release, or something equivalent, only, that an equitable demand can be given away. A mere waiver signifies nothing more than an expression of intention not to insist upon the right; which in equity will not without consideration bar the right any more than at law accord without satisfaction would be a plea.'
If the acts set up as showing waiver occur before actual default, the party is induced to abstain from taking steps to prevent the default from happening, which abstention, if the strict terms of the contract were adhered to, would or might operate to his prejudice. Regarding the case then as one in which some consideration must be shown, is there any such consideration in the present case? The suggested consideration is that [the mortgagor] at the request of the mortgagees refrained from taking steps which might, and upon the evidence probably would, have resulted in his saving the property for his beneficiaries. We have some difficulty in saying that this is not a sufficient consideration to bring this case within the rule laid down in Hughes v Metropolitan Railway Co.
Again: We are reluctant to hold that a mortgagee, who has made a formal demand of payment which is a necessary condition precedent to the exercise of a power of sale, cannot by his conduct in negotiations with the mortgagor, as well after as before the existence of actual default, estop himself from alleging that the notice has been given. If it is arranged between them that their relations shall continue on the footing that the notice has not been given, and on the faith of that arrangement the mortgagor acts or refrains from acting, we are strongly disposed to think that the case should be considered not as a representation of intention, but as a representation of an existing fact on the basis of which both parties are to act, namely, that the demand is to be regarded as not having been made, so that a fresh demand must be made before the mortgagee can be heard to allege that default has been committed. (footnotes omitted)