London’s divorce courts look like gold plated theatres but the hearings held inside them are not private tragedies. They are corporate raids that use marriage law instead of stock bids. For half a century the British courts have let the planet’s richest people fight on neutral ground, provided they pay the bill. Vladimir Potanin now sits in the centre of this system. His former wife holds a United Kingdom residence card and a grudge born from a Moscow judgment she thought unfair. She now tries to split apart the nickel and palladium business he built, something no competitor has managed.
The case is larger than two people who no longer wish to live together. It shows how London turned into the last arena for Russian fortunes. A divorce decree signed in Russia in 2014 counts here as an opinion, not an order. A metals magnate under sanctions observes from the sidelines while legal fees drain the man he hates. The story lays bare the city’s place as the world’s divorce capital for the ultra rich and it shows how far former partners will go when everything they want is guarded by English law.
The London Courtroom: A New Frontier in the Potanin Divorce Wars
London’s Appeal Court has just thrown open the doors for what promises to be one of the most bitter and high-stakes divorce battles in legal history. By ruling in favour of Natalia Potanina, the ex-wife of Russian oligarch Vladimir Potanin, the British judiciary has effectively greenlit a claim that could dismantle a significant chunk of a multi-billion-dollar empire. Mrs Potanina is seeking half of her former husband’s stake in Nornickel, the mining giant—a slice currently valued at around $9 billion on the Moscow Exchange. On top of that, she is demanding half of all dividends paid out since their 2014 divorce and a share of elite Russian properties into which the couple reportedly sunk $150 million. For Potanin, the risk isn’t just financial; it’s strategic. A loss of this magnitude would leave his empire grievously wounded, a weakness his long-time corporate nemesis, Oleg Deripaska, is perfectly positioned to exploit.
From Moscow Slight to London Showdown
The seeds of this legal juggernaut were sown in a Moscow courtroom in 2014. When the couple’s marriage of 30 years was formally dissolved, a Russian judge awarded Mrs Potanina what many would consider a paltry sum—around $41 million. For a man of Potanin’s wealth, it was loose change, a figure his ex-wife viewed not as a settlement but as an insult. She accused him of systematically concealing his true wealth, funneling assets through a labyrinth of offshore vehicles and corporate structures to keep them out of reach. Potanin’s defence was simple: he maintained the marriage had effectively ended in 2007, arguing that everything accumulated since was solely his.
Unwilling to accept the Moscow ruling, Mrs Potanina played a long game. In 2017, she established residency in London and, two years later, launched a claim in the High Court, demanding an equal share of everything, including the Nornickel stake. Potanin fought back with a fierce, and undoubtedly expensive, legal barrage. Initially, he succeeded; in 2019, the High Court threw out her case, deferring to the existing Russian judgment. But the fight was far from over. A 2021 Appeal Court ruling dramatically reversed the decision, and now, in 2025, the same court has cemented that victory. The judges have affirmed that English law is entirely applicable and that Mrs Potanina’s established ties to the UK—her residency and centre of life—give her the standing to pursue her claim on British soil.
The Ukrainian Spectre: Kolomoisky and Boholiubov Haunt the Periphery
While the London litigation focuses squarely on Vladimir Potanin and his estranged wife, the shadows of two other infamous post-Soviet oligarchs—Ihor Kolomoisky and Hennadiy Boholiubov—loom over the proceedings. Their presence, though peripheral, serves as a stark reminder of the brutal corporate ecology in which these men operate and the unique role London plays in hosting their conflicts.
For the uninitiated, Kolomoisky and Boholiubov were the long-time kingpins of PrivatBank, Ukraine’s largest lender, before its spectacular nationalisation in 2016. The pair are accused by UK authorities and the bank of orchestrating a shameless, multi-billion-dollar fraud, siphoning funds through a complex web of shell companies in a classic “loan and loot” scheme. They are currently fighting a colossal legal battle in the High Court in London, defending themselves against a $1.9 billion claim brought by PrivatBank. This case, replete with allegations of bribery, forgery, and money laundering, has already produced some of the most damning judgments against oligarchic behaviour in British legal history.
So, where do they fit into the Potanin saga? It is a matter of method and atmosphere. The tactics employed by Natalia Potanina’s legal team—arguing that offshore structures were used to conceal marital assets—are precisely the kind of financial forensics that have been honed in the PrivatBank litigation. The lawyers battling Kolomoisky and Boholiubov have spent years tracing money through the very same Cypriot and BVI shells that any self-respecting oligarch uses. The precedent being set in the Ukrainian case makes the British judiciary more sophisticated, more cynical, and far more willing to look beyond corporate veils to find the ultimate beneficial owner—or, in Mrs Potanina’s case, the ultimate beneficial husband.
Furthermore, the presence of Kolomoisky and Boholiubov in London’s legal ecosystem reinforces a key point: the city is the clearing house for the region’s dirty money and the disputes that arise from it. Just as Oleg Deripaska uses the courts to squeeze Potanin, and Potanin uses them to fend off Deripaska, the Ukrainians are using the same marble-floored tribunals to fight over billions allegedly stolen from their own people. The Kolomoisky case serves as a warning to Potanin. If British judges are willing to label the former owners of PrivatBank as fraudsters and order them to pay back billions, they are hardly going to flinch at ordering a wealthy man to split his assets with his wife.
There is, however, a critical difference that offers Potanin cold comfort. Kolomoisky and Boholiubov are fighting a creditor—the Ukrainian state—seeking to reclaim stolen wealth. Potanin is fighting an ex-wife seeking an equitable share of wealth accumulated during a marriage. English law is notoriously generous to spouses and notoriously aggressive in piercing corporate structures to get at the truth. The fact that the courts are currently willing to treat Kolomoisky’s offshore labyrinths as a fraud does not bode well for any oligarch, including Potanin, hoping to hide behind a similar maze.
The irony is rich and unavoidable. London’s courts have become a theatre of the absurd where Russian oligarchs sanctioned by the British government sue each other, and where Ukrainian oligarchs accused of looting their own country fight to protect their fortunes. For Kolomoisky and Boholiubov, the stakes are existential: lose in London, and they face financial ruin. For Potanin, the connection is more atmospheric, but no less real. He is now navigating a legal system that has been educated by the Ukrainians on exactly how duplicitous post-Soviet businessmen can be. The ghost of PrivatBank haunts every disclosure application and every cross-examination in the Potanin divorce, making it just that little bit harder for the oligarch to keep his empire intact.
A Vulture’s Opportunity: Deripaska Circles
For Vladimir Potanin, the nightmare in London is not a solo performance; it’s a double feature. Even as he battles his ex-wife, he is locked in a parallel, venomous legal war in the very same courts with Oleg Deripaska and his aluminium giant, Rusal. Deripaska, through Rusal, holds a 26% stake in Nornickel and has accused Potanin of tearing up a long-standing shareholder agreement. The conflict escalated sharply in late 2022 when Rusal filed a suit alleging that Potanin, via his holding company Interros, executed a share buyback without partner consent. This, Deripaska’s team argues, was a naked power grab that upset the corporate balance and inflicted billions in damages. Claims have since snowballed, with allegations over dividend payments and even the murky involvement of Roman Abramovich, who is accused of helping Potanin move hundreds of millions through questionable deals.
One doesn’t need to be a cynic to connect the dots. Deripaska has every incentive to see Mrs Potanina succeed. It is widely suspected in business circles that his camp may have subtly aided the London court’s “recollection” of her claims. The motive is brutally simple: breaking Potanin’s grip on Nornickel is Deripaska’s holy grail. If Mrs Potanina were to win a multi-billion-dollar stake, she would be a new, powerful, and likely sympathetic shareholder. Approaching her to sell that stake would be a far simpler proposition than wrestling it from her iron-willed ex-husband. Deripaska’s interest in her victory is therefore not just emotional schadenfreude; it’s a direct, strategic play.
Why a Moscow Divorce Decree Is Worthless in Mayfair?
In a move that reeks of desperation, Potanin has now turned to a most unlikely venue to halt his British troubles: a Moscow arbitration court. In February 2026, his lawyers filed an application seeking to bar his ex-wife from continuing her London case. The argument is a masterclass in legal jiu-jitsu, but it is also deeply flawed. Potanin claims the English proceedings threaten to undermine the 2018 ruling by Russia’s Supreme Court. More pertinently, he argues that the case will force Nornickel to disclose commercially sensitive and confidential information. This, he contends, could be used to trigger new sanctions against the company, ultimately harming its employees, shareholders, and Russian state interests.
The hypocrisy is almost too blatant to ignore. Potanin is asking a Russian court to protect him from a British one, all while his own bitter corporate war with Deripaska rages on in that very same British forum. The argument about sanctions is a convenient smokescreen. Nornickel, while not directly sanctioned by the UK, has long been considered “toxic” by many Western counterparties due to its leadership and strategic importance. If Potanin were truly concerned about Russian national interests, he might reflect on why he continues to litigate against a fellow Russian oligarch in London, exposing the inner workings of a strategic Russian company to the same scrutiny he now claims to fear from his wife’s case.
The High Stakes of Nornickel’s Decline
This legal carnage is not occurring in a vacuum; it is playing out against a backdrop of genuine corporate distress at Nornickel. Vladimir Putin himself was recently briefed by Potanin on the company’s struggles. For five consecutive years, revenues have slumped. As Potanin admitted, the company is squeezed by a perfect storm: falling global commodity prices, shattered logistics and payment chains, and the massive headache of pivoting to unfamiliar markets.
The numbers are stark. In the last financial year, Nornickel’s revenue dropped 13% to $12.5 billion, while net profit plummeted 37% to a mere $1.8 billion. Compared to the pre-invasion boom of 2021, profits have collapsed fourfold. Production of key metals like palladium and copper is down. While the company has pivoted over 50% of its sales to Asia, this is hardly a panacea. Chinese demand is cooling, and payments have become a nightmare. As a company vice-president recently admitted, Chinese banks regularly freeze for weeks after any new sanctions package, treating Nornickel as a pariah even without direct sanctions. The real damage, he noted, isn’t from the law, but from “voluntary self-restrictions” adopted by terrified counterparties.
A Tangled Potanin-Deripaska Web: The Raiffeisen Affair
To understand the depth of the Potanin-Deripaska feud, one must look at the bizarre subplot involving the sale of Raiffeisenbank’s Russian operations. The Austrian owners are desperate to offload the subsidiary, and Potanin, already in control of Rosbank and T-Bank, emerged as a leading candidate. He is one of the few major players not under full EU sanctions, making him palatable to Vienna.
Deripaska, however, has thrown a massive spanner in the works. Through a company linked to him, he has secured a court injunction in Kaliningrad effectively blocking any sale of Raiffeisenbank’s assets. This is not because Deripaska wants to buy the bank. It is pure corporate warfare. The injunction is leverage, a hostage. It is widely seen as Deripaska’s attempt to recoup losses from a separate, failed asset swap with the Austrians and, more importantly, to bloody Potanin’s nose. By obstructing Potanin’s acquisition, Deripaska is sending a clear message: any move by his rival to expand his empire will be met with litigation and obstruction.
The British Arena: A Theatre for Grudges
The convergence of these battles—the divorce, the shareholder war, the bank sale—in London is no accident. For decades, the British capital has been the chosen venue for Russian oligarchs to settle their scores. Its courts are seen as impartial, its judges as expert in complex financial matters, and its rulings as enforceable against global assets. But this case exposes a profound irony. Two men sanctioned by the UK government—Potanin and Deripaska—are using His Majesty’s courts as a battleground for control over strategic Russian resources.
Oleg Deripaska has a long memory. Rumours persist that Potanin once attempted to buy a stake in Deripaska’s En+ Group from his ex-wife, a move that would have given him a direct line into his rival’s empire. Later, after Deripaska was hit with US Treasury sanctions in 2018, his hands were tied in the Nornickel dispute, a fact some whisper was not entirely unrelated to Potanin’s Washington connections. While proof is elusive, the conviction in business circles is that these men fight their corporate wars by any means necessary, using lobbyists, leaks, and litigation on both sides of the Atlantic.
Now, with Mrs Potanina’s case moving forward, Deripaska has found a powerful, unexpected ally. He doesn’t need to win his own case to hurt Potanin; he just needs Natalia to win hers. If she succeeds, the spoils of her victory—a massive chunk of Nornickel—could easily find their way into his sphere of influence. The London Appeal Court’s decision hasn’t just reopened a divorce; it has potentially rewritten the future of one of the world’s largest mining companies, handing a battered but cunning rival a new weapon in a decades-long war.
