The Court of Appeal disagreed with the judge's conclusion that it would be unjust to award enhanced interest on the principal judgment and costs, particularly in circumstances where the judge had accepted that the Part 36 offer was a genuine attempt to settle and concluded that it was just to award the other elements of enhanced relief, in the form of indemnity costs and the additional sum of £75,000.
Enhanced interest on the principal judgment
First, in response to the judge's concern regarding the amount of the additional interest that would be awarded on the principal sum, the Court of Appeal observed that the court has a wide discretion as to the rate of enhanced interest to award (up to the limit of 10%). As such, it would be open to the court to award a lower enhanced rate in the interests of proportionality. However, it would not be entitled to refuse to make an order for enhanced interest at all on that basis.
Second, the CPR provides that, in considering whether it would be unjust to order any enhanced relief at all, the court must take into account specified factors, including the terms of the offer, the parties' conduct and whether the offer was a genuine attempt to settle the proceedings. The Court of Appeal considered that the level of a Part 36 offer may justify a finding that the offer was not a genuine attempt to settle the proceedings and, in such circumstances, that awarding any enhanced relief would be unjust. However, once the judge had accepted that the offer constituted a genuine attempt at settlement, the level of the offer should not have formed the basis of a finding that awarding an uplifted rate of interest would be unjust. CPR 36.17(4) sets out clearly that where judgment entered against the defendant is at least as advantageous to the claimant as a claimant's Part 36 offer then, unless it is unjust to do so, the claimant is entitled to the four specified enhanced forms of relief. The rules state that ""more advantageous" means better in money terms by any amount, however small", and that "at least as advantageous" is to be construed accordingly. The Court of Appeal determined that, by taking into consideration the high level of the offer when making no order for enhanced interest, the judge had failed to give effect to this element of the rules.
Third, the Court of Appeal disagreed with the judge's approach of treating the award of two enhancements as factors rendering it unjust to also award the two remaining enhancements. There is no suggestion in CPR 36 that the award of one of the specified forms of relief in any way lessens the claimant's entitlement to the others.
Enhanced interest on costs
Regarding enhanced interest on costs, the Court of Appeal confirmed that the relevant question should be which party was responsible for costs being incurred when they should not have been. In the present case, costs continued to be incurred because the defendant refused the claimant's offer, decided to fight the case and subsequently failed to beat the claimant's offer. This constitutes the basis of a claimant's entitlement to enhanced interest on costs. The defendant's conduct following its rejection of the claimant's offer may be a major factor in assessing the level of enhanced interest awarded, but it would not be sufficient in itself to render it unjust to make such an award at all.