London Jury Clears Diezani Alison-Madueke of Bribery Charges After Decade-Long UK Corruption Probe
Former Nigerian Minister of Petroleum Resources, Diezani Alison-Madueke, has been acquitted of all six bribery charges brought against her by British prosecutors, bringing to a close one of the most high-profile international corruption cases involving a former Nigerian public official.
The verdict was delivered on Wednesday at Southwark Crown Court in London after jurors spent more than 46 hours deliberating.
Alison-Madueke, who served as Nigeria’s Minister of Petroleum Resources between 2010 and 2015 under former President Goodluck Jonathan, had pleaded not guilty to five counts of accepting bribes and one count of conspiracy to commit bribery.
Her co-defendants, oil industry executive Olatimbo Ayinde and her brother, Doye Agama, were also found not guilty.
British prosecutors had alleged that Alison-Madueke enjoyed what they described as “a life of luxury” funded by oil and gas businessmen seeking lucrative contracts in Nigeria.
According to the prosecution, the former minister benefited from luxury properties in London, chauffeur-driven cars, private jet flights, lavish holidays, expensive designer goods and substantial cash payments.
The allegations centred on her period in office between 2010 and 2015, when she oversaw Nigeria’s petroleum sector and became the first woman to serve as President of the Organization of the Petroleum Exporting Countries.
However, Alison-Madueke consistently denied wrongdoing throughout the trial. She maintained that she neither solicited nor accepted bribes and argued that she had no direct authority over the award of oil contracts, insisting that decisions were made through established governmental processes.
During the proceedings, she also claimed that expenses incurred during official engagements were either paid for or reimbursed by the Nigerian National Petroleum Corporation.
The legal saga dates back more than a decade. British authorities revealed that investigations into Alison-Madueke’s activities commenced in 2013 under the Proceeds of Corruption Unit before being transferred to the International Corruption Unit of the UK’s National Crime Agency (NCA) in 2015.
The probe focused on allegations of bribery, money laundering and the movement of suspected illicit funds through Britain.
In October 2015, shortly after leaving office following the defeat of the Jonathan administration, Alison-Madueke was arrested in London by the National Crime Agency as part of a wider anti-corruption investigation.
She was later released on bail while investigators pursued inquiries in cooperation with authorities in several countries.
The case gathered momentum in August 2023 when the NCA formally charged the former minister with bribery offences. At the time, Andy Kelly, Head of the agency’s International Corruption Unit, described the charges as “a milestone in what has been a thorough and complex international investigation.”
Prosecutors alleged that she had accepted financial rewards in exchange for the award of multimillion-pound oil and gas contracts.
The trial itself began in January 2026 at Southwark Crown Court and lasted several months before the jury retired to consider its verdict in May.
The acquittal represents a significant setback for British anti-corruption investigators, who had spent years pursuing the case.
According to Reuters, the verdict effectively ends more than a decade of scrutiny by UK authorities into allegations surrounding the former minister.
Throughout the proceedings, Alison-Madueke’s legal team argued that the prosecution had failed to establish that she exercised control over contract awards and insisted that many of the expenditures cited by prosecutors were either personal or had been reimbursed.
The former minister, now 65, had indicated during the trial that she intended to rebuild her public and private life after years of legal battles and health challenges. Following the jury’s verdict, her lawyers said the decision had restored her reputation.
Alison-Madueke remains one of Nigeria’s most prominent former public officials to have faced international corruption allegations, and the conclusion of the London proceedings marks the end of one of the UK’s longest-running investigations involving a foreign political figure.
