Boss Sporting

From 2000 until 2006, she organized rare animal hunts at Boss Sporting, a subsidiary of the London based gun-making firm Boss & Co.^[2] It was in this capacity that she was introduced to Juan Carlos I of Spain by Gerald Grosvenor, 6th Duke of Westminster in 2004.^[2][4] The King of Spain subsequently hired her to arrange the honeymoon of his son Felipe, Prince of Asturias and his new bride Princess Letizia.^[2] Between 2004 and 2005, the monarch hired her to organize two hunting safaris, including an elephant hunt at the Duke of Westminster's estate in Botswana in 2012.^[2][5]

Apollonia Associates

In 2006, she founded a consulting firm called Apollonia Associates that advises businesses and governments.^[2][6] She relocated to Monaco where she became an advisor to Princess Charlene.^[2][6] In 2013, Albert II, Prince of Monaco, appointed her as a global trade envoy for the principality.^[7] She is one of the people named in the Paradise Papers disclosure published in the German newspaper Süddeutsche Zeitung.^[8][2]

In 2012, approximately $65 million (€57 million) was allegedly transferred from an account to zu Sayn-Wittgenstein-Sayn.^[9] Zu Sayn-Wittgenstein-Sayn told investigators that the money was a donation from the former Spanish monarch, whom Swiss prosecutors name as the first beneficiary of the Mirabaud bank account.^[9] Zu Sayn-Wittgenstein-Sayn told investigators that the money paid for the refurbishment work at an Eaton Square apartment in London. These refurbishments cost around £4 million pounds (€4,340,055).^[10][11]

In August 2020, she was part of an investigation regarding a Saudi rail deal during the late-2010s, and a series of financial transactions involving Juan Carlos I of Spain.^[9][12]

For many years zu Sayn-Wittgenstein-Sayn, used several offshore companies to move the money around that she received from different sources in order to keep private the purchase of mansions and houses based in places thousands of miles from her residence. The creation of this complicated web of companies or trusts was to hide the name of the real owner of certain properties and accounts with money. ^[13]

Relationship with Juan Carlos I

It is alleged that she became the mistress of Spanish King Juan Carlos I in 2004.^[16][17] News of her relationship with the king made international headlines in April 2012.^[2] She arranged and accompanied the monarch on an elephant-hunting safari at the Duke of Westminster's estate in Botswana.^[2][5] The elephant-hunting trip she arranged came at an expense of €40,000 which was paid by Mohammed Eyad Kayali, advisor to the Saudi royal family, who, like zu Sayn-Wittgenstein-Sayn, was named in the 2016 Panama Papers as the head of 15 offshore companies.^{[18][neutrality is disputed]} When the King fell, broke his hip and had to have emergency surgery, their affair was exposed via increased media scrutiny.^[5][18]

In 2012, King Juan Carlos transferred around €65m to her as 'a gift'.^[19] In 2020, Sayn-Wittgenstein, resident in the United Kingdom, filed an harassment case in London against Juan Carlos, claiming he'd pressured her to return the money given to her after their break up in 2012. In 2022, Juan Carlos won an appeal that he had immunity from those allegations relating to 2012–2014 when he was still King.^[20] In 2023, the High Court of England and Wales threw out the case on the grounds that it had no jurisdiction in the matter, but made no judgement as to the substance of the allegations.^[21]