The Ukrainian-born energy magnate, 66, was found hanged by a gardener at his Wentworth estate in Virginia Water, Surrey on Monday, according to the Sun.
Police are treating father-of-three Mikhail Watford’s death as ‘unexplained’, but it is not thought to be suspicious.
News of Mr Watford’s death emerged on the day Boris Johnson told the Commons that he will publish a full list of people associated with Vladimir Putin’s regime, a significant proportion of whom will face sanctions.
Police were called after the property magnate, who is not among those oligarchs already sanctioned, was found dead at midday on Monday.
Yesterday his Estonian wife Jane, 41, posted a photo on social media showing her kissing her husband in the grounds of their mansion.
It comes after the 2012 death of millionaire Russian businessman Alexander Perepilichnyy, 44, who lived in the exclusive St George’s Hill area of Weybridge.
According to The Sun, a family friend said that Watford’s state of mind could have been rattled over the war in Ukraine, launched by Russia last week.
‘The timing of his death and the invasion of Ukraine was surely not coincidental,’ the source told the newspaper. Another associate told The Sun Watford’s death ‘raises questions’ after other suspicious deaths of Russian nationals.
Surrey Police were accused of ‘incompetence’ over their investigation. There were claims he was poisoned, perhaps with a plant toxin known as ‘heartbreak grass’ – although a coroner concluded in 2018 that he died from natural causes.
Born Mikhail Tolstosheya in 1955 in Ukraine when it was part of the Soviet Union, Mr Watford made his fortune in oil and gas before building a property empire in Britain.
He changed his name to Watford when he moved to the UK, where he snapped up homes in Eaton Square in Belgravia, central London, a £18 million mansion in Virginia Water, Surrey, and, most recently, a series of properties on the Wentworth estate.
In 2015, he complained about how difficult it was to find a ‘superyacht-perfect’ mansion outside of London.
Unable to find a house to meet his exacting standards, Mr Watford commissioned his own 9,640 sq ft sprawling property, boasting that the wrought-iron gates were made by the company that supplied Kensington Palace, and the £56,000 driveway was modelled on the circular stone piazzas outside King’s College, Cambridge. ‘I want perfection, nothing less,’ he said.
‘In London – Mayfair, Knightsbridge, Belgravia – it’s possible to find top quality.
‘But outside London, no. Not even near. It wouldn’t be right for me to say the houses are cheap. I don’t want to be rude, but they’re wrong style, wrong finishes, not high-end quality. Not for us.’
Mr Watford claimed his weakness for ‘top, top quality’ came from building superyachts.
In 2007, the twice-married tycoon hit the headlines when he sued two women from his Chelsea property development and design firm, High Life Developments, after they claimed he had made improper advances at a party.