“In short, therefore, taking the CPR and these authorities together, the position is that, in contrast to the position of a claimant, a defendant (such as the appellant in the present case) who beats his or her own Part 36 offer, is not automatically entitled to indemnity costs. But a defendant can seek an order for indemnity costs if he or she can show that, in all the circumstances of the case, the claimant’s refusal to accept that offer was unreasonable such as to be “out of the norm”
“There is a separate strand of authority concerned with speculative, weak, opportunistic or thin claims. It has long been the position that a defendant’s eventual defeat of such claims can give rise to an order for indemnity costs. In Three Rivers District Council v Governor & Company of the Bank of England[2006] EWHC 816 (Comm) ; [2006] 5 Costs LR 714, Tomlinson J (as he then was) summarised the position at para 25(5): “Where a claim is speculative, weak, opportunistic or thin, a claimant who chooses to pursue it is taking a high risk and can expect to pay indemnity costs if it fails.”
“[108] … The claimant attempted to hedge its bets by backing two horses (uniform corrosion loss and localised corrosion) until receipt of the Socotec results (which only became available in dribs and drabs from August 2019 through to December 2019) made it apparent that the claimant could not credibly advance a case based on uniform loss of corrosion, whether internally or externally. From that point the claimant was driven to advance a case based solely on the existence of widespread localised corrosion. However at that point the absence of a suitably detailed staged survey and the lack of time or opportunity to obtain one meant that all that Dr Clarke had to go on was his own limited observations, coupled with such other limited evidence as was also made available to him, including the additional evidence belatedly obtained from the additional Socotec testing. [109] The consequence of all this was that in January 2020 Dr Clarke finally produced a report which was lengthy, discursive and full of scientific detail but short on hard material to back it up ...”