Diezani Grilled in London Court as Prosecutors Challenge Credibility in Corruption Trial
A high-stakes courtroom showdown unfolded on Monday at Southwark Crown Court as former Nigerian Petroleum Minister Diezani Alison-Madueke came under sustained and combative cross-examination in her ongoing corruption trial.
Lead prosecutor Alexandra Healy KC accused the former minister of misleading the jury and downplaying the scale of alleged corruption linked to her time in office. In a tense exchange, Healy directly challenged Alison-Madueke’s testimony, alleging she was untruthful in her attempts to distance herself from luxury spending and questionable financial dealings.
The prosecution argued that the case points to a coordinated system of influence and personal enrichment within Nigeria’s oil sector, portraying Alison-Madueke as a key figure in an organised bribery network rather than a peripheral participant.
While on the stand, Alison-Madueke denied knowledge of several high-value purchases reportedly made on her behalf, maintaining she was unaware of the extent of spending tied to her associates. Prosecutors countered with documentary evidence, insisting she had full awareness of the transactions.
Healy dismissed her explanations, asserting that she knew both the sources of the funds and the motives behind them.
The defence also revisited Alison-Madueke’s claims of being blackmailed by oil industry figures, including businessman Kola Aluko. She told the court she faced threats and coercion during her tenure. However, prosecutors rejected this account, arguing that evidence instead depicts a powerful official who exercised considerable control and maintained close relationships with those she now accuses.
A pivotal moment came with the presentation of a 2014 message allegedly recovered from her phone, in which she warned associates of collective consequences if they failed to comply with her directives. Prosecutors said the communication undermined her portrayal of herself as a victim.
The court also revisited allegations involving luxury shopping at Harrods. Alison-Madueke denied knowledge of several items reportedly purchased in her name, but testimony from store representatives described her as a regular client who used bespoke personal shopping services—contradicting her claims.
Further scrutiny was directed at her assertion that she reimbursed funds spent on her lifestyle, with prosecutors arguing that financial records do not support this claim.
References were also made to Nigeria’s Economic and Financial Crimes Commission (EFCC), particularly regarding her claim that key documents were lost during property raids. Prosecutors said there is no credible evidence to substantiate this.
Additional materials presented in court—including emails—suggested that some industry figures referred to themselves as her “loyal soldiers,” which prosecutors argued illustrated the extent of her influence over oil contract allocations.
According to the prosecution, the broader evidence indicates a pattern in which access to oil contracts and political influence was allegedly exchanged for luxury assets, including foreign properties and high-end goods.
Healy concluded by portraying Alison-Madueke as a central player in a system where public office was allegedly leveraged for private gain, rather than a passive administrator of the petroleum sector.
