“(a) interest on the whole or part of any sum of money (excluding interest) awarded, at a rate not exceeding 10% above base rate for some or all of the period starting with the date on which the relevant period expired; (b) costs (including any recoverable pre-action costs) on the indemnity basis from the date on which the relevant period expired; (c) interest on those costs at a rate not exceeding 10% above base rate; and (d) provided that the case has been decided and there has not been a previous order under this sub-paragraph, an additional amount, which shall not exceed£75,000 , calculated by applying the prescribed percentage set out below [which in this case is 10%] to an amount which is – (i) the sum awarded to the claimant on the claim …”
“31. First, I should say that I do not regard the specified rate of 10% as a starting point. The words of the rule provide for enhanced interest to be awarded ‘at a rate not exceeding 10% above base rate.’ That does not make the figure of 10% a starting point. It makes it the maximum possible enhancement. 32. Secondly, in my judgment, the objective of the rule has always been, in large measure, to encourage good practice. As Lord Woolf put it in the Petrograde case, ‘Part 36.21(2) and (3) create the incentive for a claimant to make a Part 36 offer’, and a party who behaved unreasonably ‘forfeits the opportunity of achieving a reduction in the rate of additional interest payable.’ Chadwick L.J. in the McPhilemy case said that it was ‘an incentive to encourage claimants to make, and defendants to accept, appropriate offers of settlement.’ 33. In my judgment, the likelihood that the provisions for all four possible awards are not entirely compensatory is supported by the negative formulation ofCPR Part 36.14 (3)(a) to the effect that ‘the court will, unless it considers it unjust to do so, order that the claimant is entitled to [the four awards].’ If the rulemakers had intended to say that all or any of the awards were only to be made if they represented compensation for litigation inconvenience, it would have been very easy to say so.” that the claimant is entitled to [the four awards].’ If the rulemakers had intended to say that all or any of the awards were only to be made if they represented compensation for litigation inconvenience, it would have been very easy to say so.”
“That does not, however, indicate that some of the factors I have already mentioned may not be relevant. Moreover, once again I do not regard the award as purely compensatory. As I have also said, different factors may in practice apply to the enhanced interest under [rules 36.17(4)(a) and (c)]. That is because account may need to be taken of how the costs, on which an enhanced rate of interest is claimed, were incurred. It could have been, for example, that despite the fact that it was unreasonable to refuse the Part 36 offer, the conduct of the litigation was itself reasonable, so that the costs on which enhanced interest was sought were not incurred in contesting bad points or dishonesty by the defendants.”
“Where the court awards interest under this rule and also awards interest on the same sum and for the same period under any other power, the total rate of interest must not exceed 10% above base rate.”
“80. …. However, the commercial effect would be to turn what is a maximum interest rate of 10% above base (when ordered) into 11% above base, which is surprising. 81. In those circumstances it seems to me that what the court is looking at under (d)(i) is the basic monetary award not including interest. Accordingly, in my judgment, [r.36.17(4)(d)] does not require the court to apply the prescribed percentage to an award of interest, in just the same way as (except in the case of a non-monetary claim, where costs are expressly mentioned) the prescribed percentage does not, on the concession made before me, apply to costs.”
“18. … In my view the wording of the rule is clear. The additional amount is calculated by applying the prescribed percentage ‘to an amount which is … the sum awarded to the claimant by the court.’ Whatever the position may be in respect of interest awarded as a matter of discretion (e.g. pursuant tos.35A of the Senior Courts Act 1981 ), the court has awarded interest at 8% as part of the sum to which the claimant was entitled contractually. As the notes in the White Book at 7.0.10 make clear, that is to be regarded as part of the sum awarded ‘as a specific sum’. 19. Had it been the intention always to exclude interest from the calculation of the ‘additional amount’, nothing would have been simpler than to repeat the words ‘excluding interest’ which appear in sub-paragraph (a) in relation to the entitlement to enhanced interest where these special sanctions apply. As a matter of statutory construction, the inclusion of the words ‘excluding interest’ in one part of the rule but the omission of the same words in another part, is a strong indication that there was intended to be a difference. The situation in Watchorn was different in that the interest of (sic) the award was itself enhanced interest awarded under subparagraph (4)(a) of the rule. The judge was concerned that the effect of allowing interest to be included in the calculation of the ‘additional amount’ would be to award a total rate of interest exceeding 10% above base rate, contrary to subparagraph (6) of the rule, although he acknowledged that the ‘additional amount’ could not strictly be regarded as interest at all. The circumstances of that case were so different that I feel in no way constrained to adopt the same approach.” effect of allowing interest to be included in the calculation of the ‘additional amount’ would be to award a total rate of interest exceeding 10% above base rate, contrary to subparagraph (6) of the rule, although he acknowledged that the ‘additional amount’ could not strictly be regarded as interest at all. The circumstances of that case were so different that I feel in no way constrained to adopt the same approach.”