" In a case where very large amounts of money are at stake, it may be entirely reasonable from the point of view of a party incurring costs to spare no expense that might possibly help to influence the result of the proceedings. It does not follow, however, that such expense should be regarded as reasonably or proportionately incurred or reasonable and proportionate in amount when it comes to determining what costs are recoverable from the other party. What is reasonable and proportionate in that context must be judged objectively. The touchstone is not the amount of costs which it was in a party's best interests to incur but the lowest amount which it could reasonably have been expected to spend in order to have its case conducted and presented proficiently, having regard to all the relevant circumstances. Expenditure over and above this level should be for a party's own account and not recoverable from the other party. This approach is first of all fair. It is fair to distinguish between, on the one hand, costs which are reasonably attributable to the other party's conduct in bringing or contesting the proceeding or otherwise causing costs to be incurred and, on the other hand, costs which are attributable to a party's own choice about how best to advance its interests. There are also good policy reasons for drawing this distinction, which include discouraging waste and seeking to deter the escalation of costs for the overall benefit for litigants ."
" (ii) Incurred costs 60. These are not subject to the approval process. This means that under the default procedure substantial costs may already have been incurred, without any budgetary control, by the time a decision is taken at a CMC. The parties' costs figures in this case illustrate the point. The total incurred by the time of my budgeting decision was over£200,000 (£110,000 on the claimant's side and£94,000 on the defendant's). In a case that goes to trial the successful party's costs incurred before approval of a budget will normally need detailed assessment, in the absence of agreement. 61. However, if by the time the costs management process takes place substantial costs have been incurred, one thing the court may do is to "record its comments on those costs": seePD 3E , paragraph 7.4. What the court will do is to "take those costs into account when considering the reasonableness and proportionality of all subsequent costs": ibid. The court may reduce a budget for reasons which apply equally to incurred costs, or for reasons which have a bearing on what should be recoverable in that respect, for instance, that so much had been spent before the action began that the budgeted cost of preparing witness statements is excessive. If so, it is likely to help the parties reach agreement without detailed assessment later on if these reasons are briefly recorded at the time the budget is approved. I make some comments of this kind below. "
" 83. Towards the end of the hearing on13 February 2015 , I made plain to the parties that I considered the claimant's costs budget to be unreliable (Section 4 above); that the claimant's costs budget was disproportionate (Section 5 above); and that the claimant's costs budget was unreasonable (Section 6 above). Although I did not in the hearing do what I have now done, and identify general figures which I consider to be reasonable under each head, I did indicate that an overall figure of about£4.5 million was likely to be the upper limit of what I considered to be reasonable. In view of the huge disparity between this figure and the claimant's budget costs, and the difficulties which the level of costs already incurred had created, I asked the parties to identify what options were open to me. 84. Essentially, four options were identified. Option 1A was to order the claimant to prepare a new budget. Option 1B was to decline to approve the claimant's costs budget, a course I was obliged to take in Willis v MRJ Rundell and Associates Ltd and Another[2013] EWHC 2923 (TCC) . Option 2 was to endeavour to set costs budget figures on a phase by phase basis, looking primarily at the estimated rather than actual costs. And Option 3 was simply to refuse to allow anything more in the costs budget beyond that which had already been spent, so that the claimant could not recover anything more than the costs already incurred …"
" This leads me to conclude that a degree of caution is appropriate when the court considers whether to make a comment about incurred costs. It is asked to do so in the context of the overall costs management exercise and the restraints that are clearly stated inPD3E para.7.3. The exercise of producing budgets and their review is, necessarily, an exercise based on limited information, even in relation to incurred costs; the amount of information that is to be included in the budget is very limited indeed. "