A former top aide to President Volodymyr Zelensky appeared in a Kyiv courtroom today, charged with embezzling state funds meant for military infrastructure. The case threatens to unravel the West’s trust in Ukraine’s anti-corruption credentials just as Britain and its allies pledge billions in reconstruction aid.

The accused, Andriy Bohdan, served as Zelensky’s chief of staff from 2019 to 2020. Sources close to the investigation confirm that Bohdan is alleged to have orchestrated a scheme to siphon off millions from contracts for building border checkpoints and military depots. The funds were laundered through shell companies registered in Cyprus and the UK. One source, speaking on condition of anonymity, told this reporter: “This is not a small-time operation. We are talking about sums that could have equipped an entire brigade. And the trail leads straight to London.”

The timing could not be worse for the British government. Chancellor Rishi Sunak is due to host a conference in London next month, co-chaired with Ukraine, to drum up private investment for the country’s recovery. The UK has already committed £2.3 billion in military aid and is the largest European donor to Ukraine. But with Bohdan’s case exposing a pattern of graft among Zelensky’s inner circle, some MPs are calling for a pause on further disbursements.

“We cannot be seen as funding corruption,” said a senior Conservative backbencher who asked not to be named. “Every pound that goes into Kyiv must be accounted for. This case shows the rot goes deeper than we thought.”

Court documents obtained by this newspaper reveal that Bohdan’s alleged co-conspirators include a former deputy defence minister and three businessmen with ties to a British-registered company called Graydon Ltd. The company, incorporated in 2018, lists a virtual office in Mayfair as its address. Its beneficial owner has never been disclosed, exploiting a loophole in UK transparency laws that the government has pledged to close but not yet acted on.

Bohdan’s lawyer, Mykola Polischuk, dismissed the charges as “politically motivated”, claiming his client is a scapegoat for a faction within the security services. “Mr Bohdan saved the state millions by rooting out corruption in the defence ministry,” Polischuk said outside the courthouse. “This is a smear campaign by his rivals.”

But the evidence is piling up. The National Anti-Corruption Bureau of Ukraine (NABU) has traced over $15 million in suspicious transactions linked to Bohdan’s accounts. Last week, NABU detectives raided the offices of a Kyiv-based real estate developer who allegedly acted as a front for the scheme. The developer, Dmytro Firtash, is already under US sanctions for bribery and money laundering.

This reporter has seen documents showing that Firtash’s company purchased a luxury apartment in central London worth £3.2 million in 2021, shortly after Bohdan left office. The purchase was made via a trust registered in Jersey. City of London Police are reportedly scrutinising the transaction as part of a wider probe into Russian and Ukrainian oligarchs using British property to hide dirty money.

The scandal threatens to overshadow Zelensky’s efforts to project an image of integrity. Last year, his government passed a law requiring officials to declare assets and launched a digital platform to track public spending. But critics argue that enforcement remains weak. “The system is riddled with loopholes,” said Kateryna Ryzhenko, a Kyiv-based anti-corruption activist. “Bohdan is just the tip of the iceberg. The question is whether the West will finally demand real accountability.”

Meanwhile, in London, the Foreign Office issued a carefully worded statement expressing “confidence in Ukraine’s judicial process” and emphasising that “the fight against corruption is a shared priority.” But behind closed doors, diplomats are worried. One official told me: “If this case explodes, it could poison bilateral relations for years. We need to see convictions, not just charges.”

As Bohdan walked into the courtroom today, he paused to wave at a small crowd of supporters holding placards reading “Enemy of the People.” Inside, the judge set a bail of 100 million hryvnias, around £2.2 million. The former chief of staff looked confident, but the evidence suggests his luck may be running out. For British taxpayers bankrolling Ukraine’s survival, that can’t come soon enough.