“I feel satisfied that in commercial cases the interest is intended to reflect the rate at which the claimant would have had to borrow money to supply the place of that which was withheld.”
“… it would neither be practical nor proportionate (even in a case involving as large sums as these) to attempt a minute assessment of what will precisely compensate the recipient. In particular, the courts do not have regard to the rate at which a particular recipient of compensation might have borrowed funds. This policy is adopted in order to control the extent of the enquiry to ascertain an appropriate rate: see Banque Keyser … the court will, however, consider the general characteristics of the recipient in order to decide whether to assess interest at a rate that is higher or lower than is conventional. So, for example, in Jaura vAhmed[2002] EWCA Civ 2010 , Rix LJ awarded interest at the base rate plus 3% to reflect that “small businessmen” had been kept out of their money and in recognition of the “real cost of borrowing incurred by such a class of businessmen”
“… it would neither be practical nor proportionate (even in a case involving as large sums as these) to attempt a minute assessment of what will precisely compensate the recipient. In particular, the courts do not have regard to the rate at which a particular recipient of compensation might have borrowed funds. This policy is adopted in order to control the extent of the enquiry to ascertain an appropriate rate: see Banque Keyser … the court will, however, consider the general characteristics of the recipient in order to decide whether to assess interest at a rate that is higher or lower than is conventional. So, for example, in Jaura vAhmed[2002] EWCA Civ 2010 , Rix LJ awarded interest at the base rate plus 3% to reflect that “small businessmen” had been kept out of their money and in recognition of the “real cost of borrowing incurred by such a class of businessmen”
“I am satisfied that the appropriate rate at which to compensate the claimants for being kept out of their money is the cost of unsecured borrowing by individuals. There will therefore be an order for interest on damages at the rate of 5% above Barclays bank base rate.”
“44. The claimant accepts that in commercial cases the presumption is (or at least was until recently) that the rate of interest under section 35A was 1% above base rate and this was the general practice in the Commercial Court. However, the latest Commercial Court Guide indicates that in the light of recent developments in interest rates, there is no presumption that that rate “is an appropriate measure of a commercial rate of interest”". Furthermore, there are a number of cases which indicate that the court's approach can be more flexible than applying one standard rate across the board.”
“(2) However, the Court adopts a broad brush. For practical reasons it will not make an enquiry into the claimant's actual loss; nor will it enquire or speculate as to what the claimant would have done with the money had he not been deprived of it. The Court almost invariably adopts as its measure what it would have cost a person in broadly the same position as the claimant to borrow the money of which he was deprived. Thus, to quote Steyn J in Banque KeyserUllman again, the aim is to establish the rate(s) at which "a person in the position of the claimant would have had to pay to borrow the money" over the period for which interest is awarded.”
“(1) whether to achieve restitutio in integrum, which I take all parties to accept is the objective, I should seek to assess the cost of borrowing money (as the Claimants contend) or the rate that the Claimants might have earned if they had had the money, that is “the investment rate” (as the Defendant Firm contends).”
“30. In my judgment, I have to decide the following issues in this context: (1) whether to achieve restitutio in integrum, which I take all parties to accept is the objective, I should seek to assess the cost of borrowing money (as the Claimants contend) or the rate that the Claimants might have earned if they had had the money, that is "the investment rate" (as the Defendant Firm contends); (2) what, according to the approach selected, is to be taken to be the proxy rate to cover all of the Claimants, given that in reality each will be in a different financial position; (3) whether interest is to be awarded for the whole of the period from13 December 2007 until judgment or for a lesser period on the basis that the Claimants should not be entitled to interest if the delay was of their own making. (1) whether to achieve restitutio in integrum, which I take all parties to accept is the objective, I should seek to assess the cost of borrowing money (as the Claimants contend) or the rate that the Claimants might have earned if they had had the money, that is "the investment rate" (as the Defendant Firm contends); (2) what, according to the approach selected, is to be taken to be the proxy rate to cover all of the Claimants, given that in reality each will be in a different financial position; (3) whether interest is to be awarded for the whole of the period from13 December 2007 until judgment or for a lesser period on the basis that the Claimants should not be entitled to interest if the delay was of their own making. 31. As to (1), it seems to me that the Court's overall approach in the authorities cited to me is to distinguish between (a) cases relating to money lost in or in relation to the conduct of a business where the general assumption would be that money lost or detained would have to be replaced by money borrowed to maintain that business and (b) cases where any award is an accretion to the funds of the claimant, rather than replacement of monies which the claimant had previously had and put to use. 32. In cases of type (a), the Court seeks to identify an appropriate interest rate, adopting a broad brush to establish a rate approximating to the cost that a claimant in that line of business or activity would have incurred in borrowing money to replace the money lost or detained. In cases of type (b), of which the paradigm may be personal injury cases, the Court seeks to identify an appropriate rate to represent a minimum return to put the claimant in the position he or she would have been if the money had been placed on deposit at the date of the event that gave rise to the claim. 33. This case does not really fit easily into either category. It seems to me an example of a third type of case, which is where the claimant is not running a business that depends upon credit, and where the loss of the money is likely to deprive the claimant of other opportunities, but where any ordinary presumption of the need for credit is weak or non-existent. 34. In cases of this third type, in my view, neither a minimum investment basis nor a proxy borrowing cost basis, is really a logical proxy. Thus, it is unlikely that any of the Claimants in this case, being sophisticated investors, would have left money on bank deposit at such low rates of return; but it is also unlikely that any of them would have borrowed at (say) 5% over base rate to make further investments: even someone with an unusual appetite for geared investment would be likely to be put off. Further, neither reflects the larger reality that in this case the Claimants' real loss is the opportunity denied for further investment: and that is not measurable. 35. Attrill may also have been a case of the third type. The claimants in that case were individuals who recovered from their employers damages for breach of contract for the difference between sums contractually due to them as bonus and the sums actually paid to them. There is nothing to suggest that any of the claimants had actually needed to borrow, nor that any of them were in business where there is the presumption of the need for credit. Indeed, Owen J relied on the fact that it was not a commercial case, nor akin to one, in departing from the old commercial rate of 1% above base rate: see paragraph 4.”