Prince Andrew and his former wife Sarah Ferguson were allegedly paid 'substantial sums' - including a reported 'gift' of more than £750,000 - by a Turkish millionaire.
Deputy High Court judge David Halpern named the royals in a recent ruling on a dispute between millionaire Nebahat Isbilen and businessman Selman Turk.
Mrs Isbilen had needed assistance moving her assets out of Turkey after her husband was imprisoned there owing to his "political affiliations", the judge had been told.