Ex-OPEC President Diezani Alison-Madueke Cleared of Bribery Charges in UK Court Ruling

Key Points

• Diezani Alison-Madueke, the first woman president of OPEC and Nigeria’s former oil minister, was cleared of six bribery charges at Southwark Crown Court on 17 June 2026
• The verdict came after a five-month trial and over 46 hours of jury deliberation
• The UK’s National Crime Agency (NCA) brought the trial following a years-long investigation concerning alleged offences between 2011 and 2015
• Defence lawyer Jonathan Laidlaw stated there was “gross delay” in charges being brought, resulting in material establishing her innocence being denied
• Alison-Madueke had been accused of accepting “financial or other advantages” from individuals linked to two energy companies securing contracts with Nigeria’s state-owned petroleum corporation
• Prosecutors alleged she enjoyed a “life of luxury” funded by those interested in lucrative oil and gas contracts, including chauffeur-driven cars, private jet flights, and £4.6 million in London property refurbishment
• Her defence maintained records proving innocence had “disappeared” and she could no longer access papers at home in Nigeria as her passport was retained by British police since her first arrest 11 years ago
• She has been on bail in Britain since first arrested in October 2015 and was formally charged with accepting bribes in 2023
• The jury at the London court acquitted her of all six charges after more than 46 hours of deliberation
• Alison-Madueke has been involved in numerous legal cases around the world, including in the United States

London (Britain Today News) June 17, 2026 — The first woman president of OPEC and Nigeria’s former oil minister, Diezani Alison-Madueke, was cleared of bribery charges in a UK trial Wednesday, her defence lawyers said in a statement, marking the end of a contentious five-month legal battle that has drawn international attention to corruption allegations spanning multiple jurisdictions.

“Diezani Alison-Madueke was cleared of six charges of bribery at Southwark Crown Court on 17 June 2026, after a five-month trial,”

defence lawyer Jonathan Laidlaw said in a press release, confirming the verdict that acquitted the 65-year-old of all allegations surrounding her time as Nigeria’s oil minister between 2010 and 2015.

What Was the Verdict in Diezani Alison-Madueke’s UK Trial?

The jury at Southwark Crown Court in London announced its verdict on Wednesday, acquitting Alison-Madueke of all six bribery charges she faced. Following the proceedings, the jury took over 46 hours to deliberate before reaching their decision, according to BBC News Pidgin.

The trial was brought by the UK’s National Crime Agency (NCA), which targets serious organised and international crime, after a years-long investigation concerning alleged offences between 2011 and 2015, as reported by Jonathan Laidlaw of Yahoo Finance UK. The NCA accused Alison-Madueke of improperly influencing multimillion-dollar oil contracts in return for bribes, including at least $137,000 (£100,000) in cash, according to coverage by the International Centre for Investigative Reporting.

How Did the Defence Respond to the Bribery Charges?

Laidlaw told the jury at the London court in January that there was a “gross delay” in the charges being brought, resulting in

“a great deal of material which would have established her innocence”

being denied, as reported by BBC News. The defence maintained that records proving her innocence had “disappeared” and that she could no longer access papers at home in Nigeria as her passport had been retained by British police since her first arrest 11 years ago.

Alison-Madueke asserted in court that she made efforts to combat corruption in a nation that has struggled with it since its colonial era under British rule. She is facing five charges of accepting bribes and one count of conspiracy to commit bribery, which she has consistently denied throughout the proceedings.

The defence also presented testimony that Alison-Madueke did not solicit or accept any bribes from individuals within the industry. Oil tycoons who were named in the allegations also denied paying bribes to the former Nigerian minister, as reported by BBC News on April 28, 2026.

What Lifestyle Allegations Were Made Against Alison-Madueke?

She had been accused of accepting “financial or other advantages” from individuals linked to two energy companies that had secured contracts with Nigeria’s state-owned petroleum corporation when she was the country’s oil minister, according to the original news statement.

Alison-Madueke had also been accused by prosecutors of enjoying a “life of luxury” funded by those interested in the lucrative oil and gas contracts, as stated in the press release. Her lifestyle was described as involving chauffeur-driven cars, a private jet flight to Nigeria and refurbishment work and staff costs at several London properties.

Alison-Madueke is said to have been given a chauffeur-driven vehicle, private jet travel, and £100,000 in cash. Additional perks she reportedly obtained encompassed “large amounts of luxury items at Harrods and other upscale retailers,” along with £4.6 million allocated for refurbishing properties located in London and Buckinghamshire, according to testimony at Southwark Crown Court.

The BBC reported that a previous oil minister of Nigeria has been accused of accepting bribes, which allegedly included the use of luxurious multimillion-pound properties and a lavish lifestyle in the United Kingdom. According to the International Centre for Investigative Reporting, prosecutors alleged that the former Nigerian oil minister once blew about $190,000 (£140,000) on a shopping spree for furniture and art that was paid by intermediaries.

When Was Alison-Madueke First Arrested and Charged?

President of the Organisation of Petroleum Exporting Countries (OPEC) between 2014 and 2015, Alison-Madueke has been involved in numerous legal cases around the world, including in the United States, according to the defence statement.

She has been on bail in Britain since she was first arrested in October 2015, as reported in the original news statement. In 2023, she was formally charged with accepting bribes, which she denied.

British police said they suspect she collected bribe in exchange for giving multi-million-pound oil and gas contracts, according to the BBC News Pidgin report. The British police stated that she now lives in St John’s Wood, a wealthy area in west London, and she was to appear at Westminster Magistrates Court on October 2, 2023.

What Did the Trial Proceedings Include?

The trial, which is anticipated to last around 12 weeks, began in January 2026 and is ongoing, according to BBC News coverage from January 27, 2026. Alison-Madueke was seated in the dock alongside industry executive Olatimbo Ayinde, aged 54, who faces one bribery charge related to Alison-Madueke and another for bribery of a foreign public official.

A London court has heard that Diezani Alison-Madueke, a former Nigerian oil minister facing corruption allegations, did not solicit or accept any bribes from individuals within the industry. She faces five charges of accepting bribes and one count of conspiracy to commit bribery, and the trial was ongoing at that time.

According to the International Centre for Investigative Reporting, the trial of Diezani Alison-Madueke resumed this week in the Southwark Crown Court in London, with prosecutors alleging various corrupt activities. Alison-Madueke, 65, who is currently out on bail, was minister from 2010 to 2015 under President Goodluck Jonathan and chaired the Organization of the Petroleum Exporting Countries, OPEC, for part of that time.

What Are the Legal Consequences If Found Guilty?

Under the United Kingdom’s anti-bribery law, Alison-Madueke faces up to 10 years in prison and an unlimited fine, according to the International Centre for Investigative Reporting. She has pleaded not guilty to all charges throughout the proceedings.

The Guardian NG reported on May 12, 2026 that the defence and prosecution have closed their cases in the ongoing trial of former Nigerian Minister of Petroleum Resources, Diezani Alison-Madueke, at the Southwark Crown Court in the United Kingdom, with a jury now set to deliver its verdict later that week.

Alison-Madueke is standing trial alongside oil executive Olatimbo Ayinde and her brother, Doye Agama, on a five-count charge bordering on alleged bribery, according to the Guardian NG. All three defendants have pleaded not guilty to the charges.

What Is Alison-Madueke’s Background in OPEC and Nigerian Politics?

President of the Organisation of Petroleum Exporting Countries (OPEC) between 2014 and 2015, Alison-Madueke served as Nigeria’s oil minister from 2010 to 2015 under President Goodluck Jonathan, according to the International Centre for Investigative Reporting. She was the first female president of OPEC, a significant milestone in the organisation’s history.

Diezani Alison-Madueke is the first female president of OPEC and Nigeria’s ex-oil minister. Her tenure as OPEC president coincided with significant challenges in the global oil market, including price volatility and shifting energy dynamics.
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How Did the Jury Reach Their Decision?

Following the proceedings at Southwark Crown Court in London, the jury took over 46 hours to deliberate before acquitting her of all six charges, according to BBC News Pidgin. The lengthy deliberation period indicated the complexity of the case and the careful consideration the jury undertook before reaching their verdict.

The UK court clear Nigeria former minister of petroleum Alison-Madueke of all charges, with the court in London announcing its verdict on Wednesday, clearing her of all allegations, according to BBC News Pidgin. A UK court has found Diezani Alison-Madueke, the former Nigerian Minister of Petroleum, not guilty of six bribery charges.

What Happens Next Following the Verdict?

With the verdict now delivered and Alison-Madueke cleared of all charges, the legal proceedings at Southwark Crown Court have concluded. She has been on bail in Britain since her first arrest in October 2015, and the clearance means she will no longer face these specific bribery charges in the UK jurisdiction.

The defence lawyer Jonathan Laidlaw’s press release confirmed the verdict and marked the end of the five-month trial that began in January 2026. The announcement came on Wednesday, June 17, 2026, the same day the jury delivered their decision after more than 46 hours of deliberation.

Why Has This Case Drawn International Attention?

The trial has drawn international attention due to Alison-Madueke’s prominent position as both Nigeria’s former oil minister and the first female president of OPEC. The allegations涉及 multimillion-dollar oil contracts and corruption in one of the world’s most significant oil-producing nations have implications for international energy markets and anti-corruption efforts.

The case has also been notable for its jurisdictional complexity, with legal proceedings spanning multiple countries including the UK, Nigeria, and the United States. The years-long investigation by the UK’s National Crime Agency and the involvement of international oil executives have further amplified the case’s significance.

The case has been extensively covered throughout its proceedings, with testimony from various witnesses and detailed allegations about luxury spending and property refurbishments in the UK.