"A number of approaches are possible, including the following. (a) The lender could be awarded the unpaid interest owed by the borrower at the date when the security was realised. This was the method adopted in Baxter v. F. W. Gapp & Co. Ltd. [1939] 2 K.B. 271. But to award damages on this basis is in effect to treat the valuer as the guarantor of the contract of loan. In the absence of authority I would for my part reject this solution. (b) The lender could be awarded a sum equivalent to the amount he would have earned by way of interest on another loan if he had had the money available for this purpose. In my view, however, such an award should not be made in the absence of evidence that the money lent would have been used for another transaction. This evidence would have to be directed to proving an unsatisfied demand for loans and I anticipate that such evidence might seldom be forthcoming. Moreover, even if evidence of a lost transaction were available, I see no reason why the interest should be at the default rate rather than at the ordinary rate provided for in a standard contract for this type of business. (c) The lender could be awarded a sum equivalent to the interest which would have been earned if the sum had been placed on deposit. (d) The lender could be awarded a sum to represent the loss of the opportunity to invest the money elsewhere. This was the solution adopted by the Supreme Court of British Columbia in Seeway Mortgage Investment Corporation v. First Citizens Financial Corporation (1983) 45 B.C.L.R. 87, where it was said, at p. 101: 'What the plaintiff lost then was the opportunity to invest its$50,000 in a security which had the same risks except that the appraisal would be accurate.' I do not propose to express any concluded view about these methods of assessment. I do not consider that any one of the last three methods of assessment wouldnecessarily be right to suit all cases. It would depend on the evidence."
“The great likelihood is that any prospective borrowers whose applications were rejected at the time of the advance were rejected because they did not meet the lender’s lending criteria. It is not credible that those criteria would have been relaxed had the particular advance not been made. Therefore, the lender will have to show that there was an unsatisfied demand for loans from persons meeting its lending criteria. This may be unlikely, particularly given the profligate rate of lending at the time which is relevant to most lender claims”