Background
The matter concerned an application to set aside a Default Costs Certificate in detailed assessment proceedings arising from family litigation. The underlying case was a divorce petition under Case Number BV20D09765, where an order had been made by HHJ Poole on 15 May 2024 requiring the Respondent (H) to pay the Petitioner’s (W) costs. Those costs were to be assessed on the standard basis from 1 June 2020, in respect of the divorce petition and incidental applications, including applications by H for declarations regarding the validity of the divorce. The assessment was to be conducted in accordance with Regulation 21 of the Civil Legal Aid (Costs) Regulations 2013, with both parties having instructed solicitors on record.
On 11 February 2025, W served a Notice of Commencement of Bill of Costs, which was emailed to H’s solicitor and formally served by post on 12 February 2025. The notice, in Form N252, specified that points of dispute were to be served by 6 March 2025, and it included a warning that failure to do so would lead to an application for a Default Costs Certificate for the full amount of the bill. H did not serve points of dispute by the deadline. On 6 March 2025, W’s representatives applied for a Default Costs Certificate, which was issued on 11 March 2025 and served on H’s solicitors. H then issued an application to set aside the Default Costs Certificate on 21 March 2025.
During this period, there were assertions regarding the health of both parties. W was noted to have been incapacitated, as evidenced by a sick note dated 27 February 2025. H was also reported to have been unwell, although the only medical evidence provided was a sick note dated 10 April 2025, which post-dated the relevant period. H had agreed to vacate a parallel hearing in March 2025, but this was attributed to Ramadan rather than health issues. H’s solicitor indicated that delays were partly due to H’s need to secure funds for a payment on account to his legal team and that he was in no position to finalise instructions until 3 March 2025.
Costs Issues Before the Court
The primary issue before the court was whether the Default Costs Certificate should be set aside pursuant to CPR 47.12. The application required consideration of whether H had shown a good reason for the certificate to be set aside and whether the application complied with Practice Direction 47, paragraph 11.2(3), which mandates that a draft of the proposed points of dispute be filed with the application. Additionally, the court had to evaluate the conduct of both parties in the context of the overriding objectives and the principles from Denton v White [2014] EWCA Civ 906 regarding relief from sanctions.
The Parties’ Positions
H sought to set aside the Default Costs Certificate under the discretionary limb of CPR 47.12(2). It was accepted on behalf of H that the first two stages of the Denton test were not met, but it was argued that the certificate should be set aside for several reasons. Firstly, H’s representatives had made an in-time request for an extension to file points of dispute on 5 March 2025, which was not expressly refused but was not agreed due to W’s costs lawyer lacking instructions. Secondly, it was questioned whether W had given specific instructions to reject the extension request. Thirdly, H emphasised a significant and unexplained increase of approximately 300% between the costs claimed in a prior N260 statement from the final hearing and the current bill of costs, arguing that this discrepancy could not be justified solely by the difference between legal aid rates and market rates. H contended that allowing the certificate to stand would diminish matrimonial assets unfairly.
W opposed the application, asserting that the Notice of Commencement had clearly warned of the consequences of non-compliance. W’s costs lawyer had been unable to obtain instructions to grant an extension by the deadline, and the application for the Default Costs Certificate was made in accordance with the pre-authorised course of action. W argued that H’s delays, including the failure to file points of dispute promptly and the subsequent delay in applying to set aside the certificate, were not sufficiently justified. W also maintained that the increase in costs was attributable to legitimate differences between legal aid billing and inter partes costs assessment, including variations in hourly rates, claimable items, and assessment bases.
The Court’s Decision
The court granted the application to set aside the default costs certificate under CPR 47.12 dated 11 March 2025 and permitted H to rely on the points of dispute served on 26 March 2025. However, no costs were awarded to either party in respect of the application.
In reaching this decision, the court found that H’s request for an extension on 5 March 2025 had not been rejected out of hand; rather, W’s costs lawyer had been unable to secure instructions in time. The court noted that W’s legal team had been pre-authorised to apply for a Default Costs Certificate upon non-compliance, but criticised their failure to provide prior warning to H’s team before making the application, describing their conduct as “only very slightly short of opportunistic.” Nevertheless, the court emphasised that H’s team had been aware of the deadline and the lack of authority to extend, and there was no adequate explanation for the delays between the issuance of the certificate and the application to set it aside, or for the initial failure to include draft points of dispute with the application.
The court placed significant weight on the unexplained 300% increase in costs between the N260 and the current bill. While acknowledging that differences between legal aid and inter partes costs could account for some variance, the court found the magnitude of the increase sufficiently concerning to warrant setting aside the certificate, given the potential impact on matrimonial assets. The court noted that W’s team had not adequately addressed this discrepancy before or during the application.
Applying the principles from Denton, the court concluded that neither party had acted in a manner that furthered the overriding objective of dealing with cases justly and at proportionate cost. Consequently, while the Default Costs Certificate was set aside to allow detailed assessment to proceed, the court exercised its discretion to make no order as to the costs of the application.

Defendants Fail To Have US$3.7m Default Costs Certificate Set Aside
CPR 47.12 | Setting Aside A Default Costs Certificate | Application Denied
Failure To File And Serve An N260 Statement Of Costs
CPR 44.2(8) | No Restriction To Ordering A Payment On Account
NO EXCUSES: RELIEF FROM SANCTIONS REFUSED FOLLOWING LATE FILING OF A COSTS BUDGET












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