Back in June, we examined the substantive appeal in Turner v Coupland Cavendish Limited [2025] EWHC 1605 (KB), where the High Court established important principles about Part 18 requests and solicitors’ obligations to answer questions about potential commissions. Now, six weeks later, Mr Justice Sweeting has delivered his judgment on the consequential matters – and the costs decisions provide equally valuable lessons for practitioners.
When an appellant succeeds on appeal but had mixed success below, how should the court approach costs? This follow-up judgment provides detailed guidance on costs orders following split outcomes, the impact of procedural failings on summary assessment, and the granular approach courts take when assessing individual items in costs schedules.
Background | The £750 Question
As readers of our earlier post will recall, the costs determination arose from a dispute over a Part 18 request seeking information about a £750 “success fee” payment made to AJG Limited, a Gibraltar company owned by the respondent firm’s Chief Executive. The appellant had succeeded on appeal in obtaining an order for the information to be provided, having previously achieved mixed success before Senior Costs Judge Rowley (winning on the Part 18 issue but losing on a disclosure application).
The Stay Application | A Costs-Adjacent Issue
Before addressing costs, the court dealt with the respondent’s application for a stay pending a proposed appeal to the Court of Appeal. While not strictly a costs matter, this had significant implications for the costs orders that would follow.
The respondent argued that information, once provided, “cannot be erased” and that compelling disclosure would cause “irremediable harm” if their appeal succeeded. Mr Justice Sweeting rejected this, distinguishing between steps that cannot be undone and those causing irreparable harm:
“The fact that a step ordered in the proceedings cannot be undone is not the same as one which will cause irreparable harm if later reversed on appeal.”
The stay was refused, clearing the way for the costs determinations.
Costs of the Appeal | Conduct Matters, But Not That Much
The respondent sought to depart from the general rule that costs follow the event, arguing the appellant’s conduct warranted either no order as to costs or a 50% reduction. The main complaint? The appellant had failed to include the Part 18 request in the bundle for the hearing below and only rectified this by filing a supplemental bundle two days before the appeal.
Mr Justice Sweeting was unmoved:
“The omission of the request from the bundle for the appeal was rectified and did not, in my view, cause such prejudice or alteration to the appeal as to justify departing from the fundamental principle that costs follow the event where an appeal has been allowed.”
The judge found that while there had been procedural failings, they didn’t justify a wholesale departure from the general rule. However, these failings would be reflected in the summary assessment of individual items.
Costs of the Hearing Below | The “Win and Loss” Analysis
The most interesting costs decision concerned the hearing before Senior Costs Judge Rowley. The appellant had succeeded on the Part 18 application but failed on disclosure – what the respondent characterised as a “win-loss” outcome.
The judge’s analysis was pragmatic:
“The amount of time and resource devoted to the arguments in relation to disclosure, reflected in the Judgment below, appear to me to be at least as significant as those which were directed towards the Part 18 request. If an issues-based cost order had been made, then parity would likely have been the outcome.”
Adding weight to this conclusion was the appellant’s breach of CPR 44 PD.9.5(4) – the statement of costs for the hearing below was dated 17 July 2025, nearly two years after the September 2023 hearing. The result: no order as to costs for the hearing below, though the respondent would repay costs already paid by the appellant under the November 2023 order.
Summary Assessment | The Devil in the Detail
Three statements of costs were assessed:
First Statement (Appeal Costs): £16,915.36 claimed, £14,057.76 allowed
Key reductions included:
- Drafting Appellant’s Notice: Reduced from £1,268.50 to £816 (described as “high” for a single document)
- Reviewing irrelevant witness statement: £190.40 disallowed entirely
- Instructions to counsel: Reduced from £652.80 to £408 (2.4 hours deemed excessive)
- Mr Carlisle’s preparation: £275 disallowed as he didn’t attend the hearing
The judge was particularly careful about fee earner rates, adjusting claims where the wrong grade had been used. When a Grade D fee earner attended instead of the Grade B fee earner identified in the schedule, rates were adjusted accordingly.
Second Statement (Post-Judgment Costs): £4,298.76 claimed, £2,422.08 allowed
The main reduction was the complete disallowance of £550 claimed for reviewing an attendance note from the hearing – deemed duplicative as the firm’s representative had attended.
Third Statement (Hearing Below): No assessment required
As no order for costs was made for the hearing below, this £9,598.32 claim fell away entirely.
Practical Implications
This case reinforces several important principles for costs practitioners:
Mixed success requires careful analysis: Where parties achieve split outcomes, courts will look closely at the relative time and resources devoted to each issue. An issues-based assessment might well result in costs neutrality.
Procedural breaches have consequences: Failing to serve statements of costs in accordance with CPR 44 PD.9.5(4) can tip the balance against a costs order, particularly in borderline cases.
Conduct arguments need substance: Minor procedural failings that don’t materially affect proceedings won’t justify wholesale departures from costs following the event, though they may influence item-by-item assessment.
Summary assessment is granular: Judges will scrutinise individual items, particularly where work appears duplicative, administrative, or where the wrong fee earner grade is claimed.
Document your attendance: Claiming preparation time for hearings you don’t attend is a non-starter, as Mr Carlisle discovered to the tune of £275.















