Crescent Petroleum and Crescent Gas Corporation are enforcing a London-seated arbitral award against National Iranian Oil Company (NIOC) for failing to supply gas under a 2001 contract. Courts in England, the United States, the Netherlands, Greece, and Malaysia have backed enforcement of the award, now about $2.75B with interest. NIOC’s expanded challenge to the arbitrators and its UK Supreme Court appeal over its London headquarters are pending.
Latest development Aug 2026
In August 2026, NIOC added further grounds to its challenge to arbitrators Robert French, Jeremy Cooke, and Lord Phillips. It did so after Cooke declined a request to step down over repeat appointments by Reed Smith, counsel for Crescent. The expanded disqualification challenge remains pending.
Why it matters
Enforcement against National Iranian Oil Company (NIOC) tests where creditors can seize the assets of a sanctioned state oil company to satisfy a commercial award. It also shows how sanctions regimes and English insolvency law interact with award enforcement across jurisdictions.
Background
On April 25, 2001, Crescent Petroleum Company International Ltd (Crescent Petroleum), a private United Arab Emirates energy company, signed a gas supply contract with National Iranian Oil Company (NIOC). Under the 25-year Gas Sales and Purchase Contract, NIOC was to supply gas from Iran’s offshore Salman field starting in 2005, but it never delivered. Opposition in Tehran, including corruption allegations against the deal that were never proven in any court, led Iran to effectively abandon the contract. Crescent Petroleum assigned its rights under the contract to its subsidiary, Crescent Gas Corporation Ltd (Crescent Gas). In 2009, the two companies (together, Crescent) commenced ad hoc UNCITRAL arbitration against NIOC, seated in London and registered as PCA Case No. 2009-20.
On July 31, 2014, the tribunal issued an Award on Jurisdiction and Liability, finding the contract valid and binding and NIOC in breach. On March 4, 2016, the High Court in London dismissed NIOC’s application under sections 67 and 68 of the Arbitration Act 1996 to set aside that award. On September 27, 2021, the tribunal issued a Partial Award on Remedies of about $1.33B for lost profits and about $1.08B for other losses, plus interest. With interest, the amount has since grown to about $2.75B. On July 13, 2023, the Court of Appeal of England and Wales dismissed NIOC’s appeal against the summary dismissal of its section 67 challenge to the tribunal’s jurisdiction.
In August 2022, Crescent Gas obtained permission to enforce in England. Days later, NIOC transferred its London headquarters, NIOC House, to a related pension fund, the Retirement, Savings and Welfare Fund of Oil Industry Workers (the Retirement Fund). On April 15, 2024, the Commercial Court held that NIOC made the transfer at an undervalue to put the property beyond Crescent’s reach, contrary to section 423 of the Insolvency Act 1986. On September 30, 2025, the Court of Appeal dismissed appeals by NIOC and the Retirement Fund and upheld the unwinding of the transfer. It granted permission to appeal to the UK Supreme Court, which docketed NIOC’s appeal in December 2025 (UKSC/2025/0190).
On April 30, 2024, the U.S. District Court for the District of Columbia confirmed the award and entered judgment against NIOC for $2,756,123,688, including accrued interest. In October 2025, after a Kuala Lumpur High Court order implementing the award, Crescent reached roughly $2.3B in NIOC-linked funds at First Islamic Investment Bank in Labuan, Malaysia. Courts in Greece and the Netherlands have also approved enforcement, and on January 23, 2026, the Supreme Court of the Netherlands (Hoge Raad) rejected NIOC’s cassation appeal. On June 19, 2026, NIOC filed a proposal to disqualify arbitrators Robert French, Jeremy Cooke, and Lord Phillips, and in August 2026 it added further grounds to the challenge, which remains pending. Iran has publicly characterized the seizures as politically motivated.
Timeline 16 events
-
OrderNIOC alleges further grounds to disqualify tribunal members
NIOC added new grounds to its challenge against the tribunal after arbitrator Sir Jeremy Cooke declined a request to step down over repeat appointments by Reed Smith, counsel for Crescent.
Iran's oil company alleges further grounds of challenge in Crescent case
-
OrderNIOC seeks disqualification of arbitral tribunal members
National Iranian Oil Company filed a proposal to disqualify arbitrators Robert French, Jeremy Cooke and Lord Phillips from the tribunal that issued the underlying award. The proposal was pending as of the source date.
-
JudgmentDutch Supreme Court rejects NIOC’s cassation appeal
The Hoge Raad refused to revisit enforcement in the Netherlands, confirming enforcement of the roughly $2.75B award against NIOC.
-
AppealUK Supreme Court dockets NIOC’s appeal over NIOC House
The UK Supreme Court registered the appeal under reference UKSC/2025/0190. It concerns trust and insolvency law questions arising from the NIOC House transfer.
UK Supreme Court dockets Iran's appeal over London building confiscation
-
EnforcementCrescent enforces against $2.3B in NIOC-linked funds in Malaysia
The enforcement followed a Kuala Lumpur High Court order implementing the award. The funds are held at First Islamic Investment Bank in Labuan and are linked to NIOC and its subsidiary Naftiran Intertrade Company.
Iranian tycoon says $2.3 billion seized from his Malaysian bank in Crescent dispute
-
JudgmentCourt of Appeal upholds unwinding of NIOC House transfer
The court dismissed appeals by NIOC and the Retirement Fund and confirmed that the transfer was a transaction at an undervalue. It granted permission to appeal to the UK Supreme Court on the underlying trust law question.
National Iranian Oil Company v Crescent Gas Corporation Limited
-
JudgmentU.S. court confirms award and enters $2.75B judgment
The U.S. District Court for the District of Columbia entered judgment against NIOC for $2,756,123,688, including accrued interest.
-
JudgmentHigh Court rules NIOC House transfer was a transaction at an undervalue
Sitting in the Commercial Court, Sir Nigel Teare held that NIOC transferred NIOC House to the Retirement Fund to put the property beyond Crescent’s reach. The transfer breached section 423 of the Insolvency Act 1986.
Crescent Gas Corporation Ltd v. National Iranian Oil Company & Anor. [2024] EWHC 835 (Comm)
-
JudgmentCourt of Appeal dismisses NIOC’s jurisdictional challenge
The Court of Appeal of England and Wales dismissed NIOC’s appeal against the summary dismissal of its section 67 challenge to the tribunal’s jurisdiction over the award.
-
OtherNIOC transfers London headquarters days after enforcement permission granted
NIOC transferred NIOC House to the Retirement, Savings and Welfare Fund of Oil Industry Workers after Crescent Gas obtained permission to enforce in England. Courts later found the transfer was at an undervalue and designed to defeat creditors.
Enforcing against a state-owned debtor: English Court of Appeal upholds judgment
-
FilingCrescent petitions U.S. court to confirm the award
Crescent Petroleum and Crescent Gas Corporation filed the petition in the U.S. District Court for the District of Columbia.
CRESCENT PETROLEUM COMPANY INTERNATIONAL LIMITED et al v. NATIONAL IRANIAN OIL COMPANY
-
AwardTribunal issues Partial Award on Remedies against NIOC
The tribunal awarded Crescent about $1.33B for lost profits and about $1.08B for other losses, plus interest.
Crescent v. NIOC (I), Partial Award on Remedies, 27 Sept 2021
-
JudgmentEnglish High Court rejects NIOC’s challenge to liability award
The court dismissed NIOC’s application under sections 67 and 68 of the Arbitration Act 1996 to set aside the Award on Jurisdiction and Liability.
National Iranian Oil Co v Crescent Petroleum Co International Ltd and Another [2016] EWHC 510 (Comm)
-
AwardTribunal issues Award on Jurisdiction and Liability
The tribunal found that the Gas Sales and Purchase Contract was valid and binding and that NIOC breached it by failing to deliver gas.
Crescent v. NIOC (I), Award on Jurisdiction and Liability, 31 July 2014
-
FilingCrescent commences UNCITRAL arbitration against NIOC
After NIOC failed to deliver gas under the 2001 contract, Crescent Petroleum and Crescent Gas Corporation commenced ad hoc UNCITRAL arbitration, registered as PCA Case No. 2009-20, seated in London.
Crescent v. National Iranian Oil Company (NIOC) (I), PCA Case No. 2009-20
-
OtherNIOC and Crescent Petroleum sign 25-year gas supply contract
The Gas Sales and Purchase Contract covered gas from Iran’s offshore Salman field. It came with side letters and a later amendment.
Experimental AI forecast
How it is madeHow will the UK Supreme Court decide NIOC’s appeal over the unwinding of the NIOC House transfer (UKSC/2025/0190) by March 31, 2028?
- NIOC’s Supreme Court appeal fails48%
- Still pending on March 31, 202825%
- Supreme Court allows NIOC’s appeal15%
- Appeal partly allowed or remitted7%
- NIOC drops appeal or settles5%
- Resolves by
- Mar 31, 2028in 17 months
- Record confidence
- Medium
NIOC’s UK Supreme Court appeal over NIOC House most likely fails (48%), with judgment expected by March 31, 2028. Two courts have already found that NIOC moved the building at an undervalue to defeat Crescent, and the appeal is limited to a trust law question. The main alternative is that no judgment arrives by the deadline (25%).
How it resolves. Resolves on the UK Supreme Court’s published judgment in UKSC/2025/0190. “Appeal fails” if the Court dismisses the appeal and leaves the Court of Appeal’s order unwinding the transfer in place. “Allows appeal” if the Court sets aside the unwinding order in full. “Partly allowed or remitted” if the Court varies the order or sends any issue back to a lower court. “Drops appeal or settles” if the appeal is withdrawn, discontinued, or disposed of by a public settlement before judgment. “Still pending” if none of these has occurred by March 31, 2028.
Reasoning
Starting point. UK Supreme Court civil appeals decided on the merits, especially appeals against concurrent lower-court findings: The UK Supreme Court allows roughly 40% to 45% of the appeals it decides, lower where the appeal attacks concurrent factual findings.
UK Supreme Court appeals succeed in roughly 40% to 45% of decided cases, so the starting point is close to even. This record pulls toward dismissal because two courts found that NIOC transferred NIOC House to put it beyond Crescent’s reach, and the appeal is confined to a trust law question. Even a win for NIOC on that question may not undo the section 423 finding, so a partial outcome or remittal gets its own share. Timing is the main uncertainty, since the appeal was docketed in December 2025 and the record shows no hearing date. The Court often takes a year or more to list an appeal and several months more to give judgment, so a ruling by March 31, 2028, is likely but not assured. Withdrawal or settlement is unlikely given Iran’s public stance that the seizures are political and the sanctions issues that complicate any payment. Nothing in the record has changed since the September 24, 2026, forecast, so the numbers are unchanged.
Concurrent findings that the transfer aimed to defeat Crescent · Appeal limited to a narrow trust law question · No hearing date yet listed in the record · Iran’s political framing makes settlement unlikely · Crescent’s broad enforcement success lowers NIOC’s leverage
Generated automatically by Claude Opus 5.5 on Oct 3, 2026 from this case’s record on this site, and published without editorial review. The probabilities are the model’s judgment, not measured frequencies, and they are scored publicly as cases resolve. Not legal or investment advice. How the forecasts are made