“… 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 (of reasonable and proportionate costs) 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.”
“… litigants are free to pay for a Rolls-Royce service but not to charge it all to the other side.”