Food writer Tom Parker Bowles is to become a director of Green's Restaurant and Oyster Bar, co-owned by his uncle Simon Parker-Bowles, when it moves from its current home in London's Duke Street.
The restaurant, which has been a favourite for more than 30 years with the aristocracy and politicians for its classic British dishes, is moving to nearby St James's Street, to premises currently occupied by Wheeler's of St James's, according to The Times.
The move is expected to take place later this year just as Simon Parker Bowels, a former Coldstream Guard who went on to establish The Greenhouse Wine Company in 1973 and Green's in 1982, reduces his profile in the business.
As well as bringing in his nephew, who is the son of the Duchess of Cornwall, he has also appointed Stephen Evans, who has previously worked for Whitbread and Forte, as chief executive.
A new company, Green's 2013, with Evans as the sole director, was set up in February to oversee the development of the new restaurant.
Alongside Simon Parker Bowles, the co-owners of Green's - which includes a second branch in a former Lloyds bank building in the City of London - are South African born financier Abelines Geldenuys, Lord Daresbury and Lord Vestey. The company also runs a small private dining and events business.
It is believed the new site is being acquired from Marco Pierre White and Sir Rocco Forte for around £2m, with a further £1m needed to be spent on transforming the property to the new Green's. The money is to be raised through an enterprise investment scheme.