Prohibition Without Disclosure: What the Alison-Madueke Acquittal Exposed

On 17 June, after a five-month trial, a London jury acquitted Diezani Alison-Madueke of all six bribery charges, closing an investigation that had run for more than a decade.

The prosecution honed in on the defendant’s lifestyle, informing jurors that the former Nigerian minister of petroleum resources and OPEC president, enjoyed a "life of luxury" funded by oil and gas figures seeking lucrative contracts: £100,000 in cash, private jets, chauffeured cars, and more than £2 million spent at Harrods using payment cards belonging to Kolawole Aluko and his company, Tenka Limited.

What the Crown had to prove however, was not that the benefits were lavish, but that they were intended to induce or reward improper performance of her office. Alison-Madueke's answer was that she had no real influence over contract awards, framing herself as a mere “rubber stamp”, and that the spending was reimbursed by the Nigerian state for official business, or by herself for personal expenses.

Former Nigerian President Goodluck Jonathan's written statement, read in court, supplied the institutional backing for that account. Its one quoted sentence rewards close reading: "Any properly incurred incidental or in-kind assistance from third parties would be recorded and reimbursed where applicable." Three qualifiers in fourteen words — properly incurred, would be, where applicable — describe how a system was meant to operate, without certifying that any benefit on the charge sheet passed through it.

The power of his statement was that it moved the benefits out of the category of gifts into that of authorised, reimbursable official expenses, which are lawful nearly everywhere. As the director of Accountability Lab Nigeria Odeh Friday put it to me, the defence did not need to prove the benefits were legitimate — it only needed to make that ‘innocent' reading plausible enough to leave the jury in doubt. The prosecution told jurors no reimbursement records were produced; the defence answered that the records that would have shown the payments were reimbursed had been seized from her Abuja residence in a 2015 search, and that a "gross delay" between her 2015 arrest and 2023 charge had further eroded the material establishing her innocence. Neither story could be verified.

Yet the vacuum that decided this case was not created by any gap in the law itself. Nigeria’s Code of Conduct bars a public officer from accepting benefits on account of their duties, and presumes that gifts from "commercial firms, business enterprises or persons who have contracts with the Government" are received in contravention. The ICPC Act, the country's principal anti-corruption statute, goes even further: section 60 makes evidence that gratification is "customary" inadmissible outright. As Dr Leena Koni Hoffmann — an associate fellow of Chatham House's Africa Programme and a former investigator at Nigeria's Independent Corrupt Practices Commission (ICPC) — explained it to me, gift-giving to Nigerian officials is grey in practice but black and white in law. Her point is that Nigerians are not confused about where a token becomes an inducement; the line is understood socially and stated clearly in statute. What is missing is consequence, a reflection, she argues, of scale, thin institutional capacity and political constraint, not of legal permission.

She also draws a distinction the "custom" framing tends to blur. Gift-giving does have genuine institutional roots in Nigeria — tributes and ceremonial offerings to traditional rulers, chiefs and community leaders. But Alison-Madueke was an appointed technocratic minister, not a traditional authority, and holding an honorary chieftaincy title does not transfer those customs to ministerial conduct. Nor does bureaucratic dysfunction excuse benefits where the stakes are highest: delayed budget releases may explain why a minister's travel is fronted by a third party, but that explanation weakens sharply in petroleum — the state's principal revenue source, and long the centre of its patronage networks.

Odeh Friday's framing is that gift regulation operates at three levels — prohibition, disclosure, enforcement — and that a system running on one of them stays vulnerable. A Nigerian public register, he argues, would force valuable benefits out of the realm of private explanation and into an auditable record. Had such a record existed here the jury would have had something to test the competing accounts against.

The contrast with the United States is instructive. A DOJ 2017 civil forfeiture action — brought against the assets themselves, not against her as a defendant — alleged she steered contracts to Aluko and other businessmen seeking Nigerian oil contracts, and ultimately recovered over $50 million on that theory under a civil standard of proof. Three court systems looked at the same missing record and drew opposite conclusions. Nigeria's reverse-onus provisions and the US civil standard treat absent documentation as counting against the recipient. The UK criminal standard let it count in her favour.

Companies transacting in Nigeria should not read this verdict as permission. The acquittal turned on what could be proved in a London courtroom eleven years and three Nigerian administrations after the fact. The exposure however is real; an official's assurance that a benefit is customary, authorised or reimbursable is not a control — it is the assertion a company would later have to substantiate. Where no public disclosure mechanism exists, the only record will be the one your organisation creates at the time.

Kristina Tremonti

Policy and Legal Analyst specializing in Governance, Rule of Law and Institutional Accountability