Restructuring & Insolvency analysis: In this judgment, the High Court considered together two related applications under the Insolvency (England and Wales) Rules 2016 (IR 2016), r 14.8 to reverse or vary decisions made by liquidators as to the admission and rejection (respectively) of two claims, and whether the liquidators should be held personally liable for the creditors' costs of those applications. Although the court ultimately reversed both of the liquidators’ decisions, it declined to order that the liquidators pay the applicants' costs. The liquidators' decision-making process was neither irrational nor unreasonable, they had acted fairly, in good faith, and without conscious bias, and they ‘did their best to give the correct answer’. Their conduct was, therefore, not ‘in substance so unreasonable or irrational, or so plainly contrary to the evidence as to attract an adverse costs consequence’. Thus, the 'starting point' under IR 2016, r 14.9(2) (that an office-holder is not personally liable for costs incurred by any person in respect of an application under IR 2016, r 14.8 ‘unless the court orders otherwise’) was not displaced. While the court applied existing authorities in reaching its decision, the judgment is a useful reminder to office-holders of: (1) how they should go about deciding whether to admit a claim to proof and in what amount—namely, to apply evidential scrutiny and reach a rational, principled decision short of conducting an exercise akin to a determination of proceedings to litigation standards, and (2) the statutory protection office-holders enjoy against personal liability for costs under IR 2016, r 14.9(2) when their decisions are challenged—liability remains exceptional and should only arise where office-holders act in bad faith, with conscious bias, and/or irrationally. Legal advisers advising office-holders should note the emphasis on reasoned decision-making and documentation, while creditors may take confidence in the court’s willingness to reverse or vary office-holders' adjudications where justified. Written by Sam Fenwick, partner and Suleika Horrocks, trainee solicitor, both of Wedlake Bell LLP.