Nigeria's £44m Costs Claim Against P&ID Goes to Assessment As 15‑day Hearing Opens in London

Nigeria’s £44m costs claim against P&ID entered a critical new phase on 13 July 2026, when a 15‑day detailed assessment hearing opened in the English courts, listed to run until 31 July. The hearing will determine exactly how much of the approximately £44.2 million in unassessed legal costs (rising to over £50 million with interest) Nigeria can recover from Process & Industrial Developments Limited following its successful challenge of the fraudulent US$11 billion arbitration award. With a bill exceeding 3,000 pages and more than 95,000 individual line items, the assessment is among the largest the English costs system has confronted, and its outcome carries significant implications for sovereign litigants, dispute-resolution practitioners and businesses monitoring cross-border enforcement risk.

Quick Summary: Nigeria’s £44m Costs Claim Against P&ID at a Glance

The first detailed assessment hearing in the long-running Nigeria v P&ID costs dispute opened in London on 13 July 2026, with a 15‑day listing running to 31 July. Nigeria’s itemised bill of costs claims approximately £44.2 million excluding interest, a figure that exceeds £50 million once statutory interest is included. The bill runs to more than 3,000 pages and contains over 95,000 separate entries. P&ID has already paid approximately £20 million on account of those costs pursuant to earlier court orders. The final recoverable sum remains uncertain: the costs judge must assess every item against the standard basis and apply a proportionality cross-check before delivering a concluded figure.

What Is Being Heard Now, the Detailed Assessment Hearing in London

The proceeding now under way in London is a detailed assessment, the formal mechanism under the Civil Procedure Rules (CPR Part 47) by which an English costs judge scrutinises an itemised bill of costs, line by line, to determine the amount properly recoverable by the receiving party. It is the final stage of the costs process that began when Mr Justice Knowles ordered P&ID to pay Nigeria’s costs of the set-aside proceedings on the standard basis.

On the standard basis, costs must have been reasonably incurred and reasonable in amount. Where there is doubt about reasonableness, the benefit of the doubt goes to the paying party, here, P&ID. Critically, even after the line-by-line review, the court must stand back and apply a proportionality test: if the total assessed costs are disproportionate to the matters in issue, the court may reduce them regardless of whether each item was individually reasonable.

A 15‑day listing for a legal costs assessment in England is substantial, reflecting the exceptional scale of Nigeria’s bill. Routine detailed assessments typically take one to three days. The length of this hearing signals that both sides will present extensive oral argument and that the costs judge may need to sample categories of work rather than review every one of the 95,000-plus items individually, a pragmatic approach increasingly adopted in high-value assessments.

Who Attends and What Evidence Is Considered

Detailed assessments are heard by a specialist costs judge or, in high-value Commercial Court matters, by a Senior Costs Judge. Both the receiving party (Nigeria) and the paying party (P&ID) are typically represented by costs counsel, barristers who specialise in costs litigation. Solicitors and, occasionally, expert witnesses on market rates or billing practices may also attend.

The evidence base centres on Nigeria’s bill of costs itself, supported by contemporaneous time records, fee agreements, counsel’s fee notes, and disbursement invoices. P&ID’s legal team will have filed “points of dispute”, a document identifying every item challenged and the grounds for each challenge. Nigeria will have responded with “replies” defending each item. The costs judge works through contested entries, resolving disputes on the papers and submissions.

How the Court Treats Large, Itemised Bills

Where a bill contains tens of thousands of items, the court frequently adopts a sampling approach: representative categories of work (for example, document review, witness preparation, expert instruction, counsel fees) are assessed in detail, and percentage reductions are applied across comparable categories. This avoids the impossibility of individually adjudicating every entry. The Court of Appeal has recently described Nigeria’s £44.2 million bill as “staggering”, a signal that proportionality arguments are likely to feature prominently. Industry observers expect P&ID’s costs team to press hard on duplication, hourly rates and the volume of fee earners deployed across the eight-week trial and the years of pre-trial investigation.

What Nigeria Claims, the Nigeria P&ID Costs Claim in Detail

Nigeria’s costs claim arises from its successful application under Section 68 of the Arbitration Act 1996 to set aside arbitration awards that were found to have been procured through fraud. The trial itself lasted eight weeks in the Commercial Court. According to the UK Supreme Court’s press summary, Nigeria incurred total unassessed costs of £44.127 million (excluding interest) in pursuit of its application. Practitioner commentary reports that the bill, once interest is added, exceeds £50 million and that it runs to more than 3,000 pages containing over 95,000 individual items.

The sheer scale of the bill reflects the complexity of Nigeria’s case: uncovering the fraud required extensive forensic investigation, analysis of banking records across multiple jurisdictions, engagement of expert witnesses, and the instruction of specialist counsel at both solicitor and barrister level. Nigeria also incurred costs in related enforcement-defence proceedings in multiple countries while the set-aside application was pending.

P&ID was ordered to pay £20 million on account of Nigeria’s costs by 5 January 2024. Subsequent orders and payments bring the approximate total paid on account to around £23.7 million. These sums are credited against whatever final figure the costs judge determines but do not cap Nigeria’s recovery, if the assessed total exceeds the amount paid on account, P&ID owes the balance.

For practitioners, the key question is not just the headline figure but how much survives the proportionality cross-check. The likely practical effect will be some reduction from the claimed total, although the extent remains genuinely uncertain until the costs judge delivers a concluded assessment.

Background: How the Dispute Reached This Point

The Nigeria v P&ID dispute is one of the most high-profile arbitration cases of the past decade. Its journey from a gas processing agreement to a multi-billion-dollar arbitration award, and ultimately to an English court finding of fraud, illustrates both the power and the vulnerability of international arbitration.

• 2010: Nigeria’s Ministry of Petroleum Resources and P&ID, a British Virgin Islands company, entered into a Gas Supply and Processing Agreement (GSPA) under which P&ID would build a gas processing plant in Calabar, Cross River State.
• 2012–2017: The GSPA was never performed. P&ID commenced arbitration, claiming Nigeria breached the agreement by failing to supply gas. An arbitral tribunal seated in London issued a liability award (2015) and a final award (2017) in P&ID’s favour valued at US$6.6 billion plus interest, growing to approximately US$11 billion with compound interest.
• 2019: Nigeria applied to the English High Court under Section 68 of the Arbitration Act 1996 to set aside the awards on grounds of fraud and public-policy violations.
• October 2023: Mr Justice Knowles delivered a landmark judgment setting aside the arbitration awards, finding that they had been obtained through fraud and conduct contrary to public policy.
• 2024–2025: P&ID appealed. The UK Supreme Court dismissed P&ID’s appeal on the substantive set-aside and separately upheld Nigeria’s entitlement to recover its legal costs in sterling.
• 2026: The detailed assessment hearing opened on 13 July 2026 to determine the final quantum of Nigeria’s recoverable costs.

Key Judgments and Legal Findings

The High Court’s October 2023 judgment made findings of exceptional gravity. The court found that P&ID had presented false evidence to the arbitral tribunal, that a Nigerian government lawyer had been bribed during the arbitration process, and that P&ID had improperly obtained and retained confidential legal documents belonging to Nigeria. These findings went to the very integrity of the arbitral process and justified the rare step of setting aside an award under Section 68.

The UK Supreme Court’s subsequent rulings confirmed these findings and resolved a residual dispute about the currency of the costs order, holding that Nigeria was entitled to recover its costs in pounds sterling, the currency in which those costs had been incurred. This ruling, delivered in October 2025, removed P&ID’s last procedural challenge to the costs order and cleared the path for the detailed assessment now under way.

Practical Implications, Recoverability, Enforcement and Risks

Obtaining an assessed costs order is only half the battle. For Nigeria and for any sovereign or corporate claimant in a comparable position, the critical question is whether the assessed sum can actually be collected. The enforcement of costs awards in the UK and beyond presents distinct challenges, particularly where the paying party’s solvency is in doubt.

P&ID has been reported to be insolvent. Nigeria has sought to recover its costs not only from P&ID directly but also, according to practitioner commentary, from third-party funders who financed P&ID’s side of the litigation. The availability and extent of third-party recovery depends on the precise terms of the funding arrangements and any applicable costs or security orders. Early indications suggest this will be a contested area in its own right.

Even where a costs order is made against a solvent paying party, enforcement can require additional proceedings. If P&ID holds assets in the UK, Nigeria can enforce the costs order as a judgment debt through standard execution mechanisms, writs of control, third-party debt orders, or charging orders over property. If assets are located outside England, Nigeria would need to seek recognition and enforcement of the English court’s costs order in the relevant foreign jurisdiction, a process that varies significantly by country.

Enforcement Checklist for Sovereigns and Claimants

• Asset tracing: Commission a professional asset-tracing exercise to identify the paying party’s global assets before the assessment concludes.
• Freezing orders: Consider whether a freezing injunction is needed (or already in place) to prevent dissipation of assets pending the outcome.
• Third-party recovery: Review whether litigation funders or other connected parties are exposed to a costs liability, either by court order or contractual arrangement.
• Insolvency proceedings: If the paying party is insolvent, evaluate the prospects of recovering through an insolvency process (proof of debt in liquidation or administration).
• Cross-border enforcement: Map the jurisdictions in which the paying party may hold assets and identify applicable enforcement routes (bilateral treaties, common law recognition, statutory regimes).

For Business Counsel: What to Advise Clients Watching the Hearing

Multinational businesses operating in Nigeria and engaged in investment opportunities in Nigeria’s petroleum industry should monitor this hearing closely. The outcome will set practical precedents for the scale of costs recoverable in complex commercial fraud set-asides, the treatment of large legal bills in the English costs system, and the enforceability of such orders against counterparties of uncertain solvency.

In-house counsel should ensure that their own litigation-management protocols account for the costs-assessment process from the outset: contemporaneous time recording, proportionate staffing, and clear fee arrangements with external counsel will all strengthen a future costs claim, or reduce exposure if their client is the paying party.

Analysis, How Counsel Will Approach Nigeria’s £44m Costs Claim Against P&ID

From Nigeria’s perspective, the strategy at the detailed assessment hearing will be to justify every category of expenditure by reference to the extraordinary complexity of the case: the multi-jurisdictional investigation, the forensic accounting work, the volume of documents reviewed, and the eight-week trial itself. Nigeria’s counsel will argue that the sums claimed were necessarily and reasonably incurred to expose a fraud of historic proportions and to protect the country from a US$11 billion liability.

P&ID’s costs team, by contrast, will challenge the bill on multiple fronts. Typical arguments in assessments of this size include objections to hourly rates (arguing they exceed the market norm for comparable work), challenges to the number and seniority of fee earners deployed, assertions that work was duplicated between solicitors and counsel, and attacks on disbursements, particularly expert fees and travel costs.

The Court of Appeal has already described the £44 million figure as “staggering,” and P&ID was ordered to pay an interim £20 million on account. Industry observers expect P&ID to rely heavily on the proportionality cross-check mandated by CPR 44.3(2)(a): even if individual items are reasonable, the total must bear a proportionate relationship to the sums in dispute and the complexity of the issues. Given that the underlying claim was a set-aside application rather than a damages claim, proportionality arguments may gain traction, although Nigeria can counter that the stakes (avoiding an US$11 billion liability) justified exceptional expenditure.

Comparison Table, Nigeria’s Costs Claim: Claimed, Paid and Recoverable Scenarios

The following table summarises the key financial data points and potential outcomes of the detailed assessment. All figures are drawn from published judicial materials and practitioner commentary. The “likely outcome” row reflects editorial analysis rather than a determined figure.

Practical Takeaway and Next Steps for Counsel

The detailed assessment of Nigeria’s £44m costs claim against P&ID is a live, evolving proceeding with lessons for dispute-resolution practitioners across jurisdictions. Counsel and in-house teams should consider the following immediate actions:

• Monitor the hearing outcome: The costs judge’s decision will set benchmarks for recoverable rates, proportionality thresholds, and the treatment of large investigative bills in fraud set-aside cases.
• Prepare an enforcement plan early: If acting for a costs claimant, begin asset-tracing and enforcement-pathway analysis well before the assessment concludes, do not wait for a final figure.
• Review internal billing practices: Firms acting in complex cross-border matters should audit their time-recording and staffing protocols against the standards applied in this assessment, ensuring that future bills can withstand scrutiny.
• Obtain specialist costs advice: For any bill exceeding £1 million, instruct costs counsel or a costs draftsman early to maximise recoverability and minimise vulnerability to proportionality challenges.

The outcome of Nigeria’s £44m costs claim against P&ID will be closely watched, not only for its immediate financial consequences, but for the precedent it sets in the intersection of international arbitration, fraud, sovereign litigation, and the English costs regime. Practitioners advising on any of these areas should treat this case as essential reading when the costs judge delivers a final assessment.

Sources

1. Courts and Tribunals Judiciary, Nigeria v P&ID Judgment
2. UK Supreme Court, Press Summary (UKSC 2024/0117)
3. Lexology, Court of Appeal Tackles Proportionality in P&ID Costs
4. White & Case LLP, P&ID v Nigeria: UK Supreme Court Reaffirms Currency of Costs Orders
5. Jus Mundi, P&ID v Ministry of Petroleum of Nigeria (Supreme Court Decision)
6. Afriwise, The P&ID Costs Appeal: Implications for Cost Recovery
7. BusinessDay, Nigeria Wins as UK Supreme Court Upholds £44m Costs Order Against P&ID
8. Punch Newspapers, UK Supreme Court Upholds Nigeria’s £44m Sterling Costs Award