The Duke of York used the pseudonym "Andrew Inverness" to set up a secret business with a sports retail tycoon, it has emerged.
The Duke reportedly used the name as he launched Naples Gold Limited with Johan Eliasch, the Swedish billionaire who is CEO of global sports equipment company Head, in November 2002.
The two friends, who are both "active" directors in the company, first met in the 1990s when Eliasch, 57, was organising a charity tennis match between Bjorn Borg and John McEnroe to take place at Buckingham Palace.
Andrew Inverness is a "professional consultant" to the firm, registered in London, and has the same birthdate as The Duke - February 19, 1960 - according to Companies House.
The pseudonym appears to have been adopted from his subsidiary title, the Earl of Inverness, which was given to The Duke in 1986 along with the title of Baron Killyleagh.