On November 16th, Prince Robert attended the IWSC Awards Presentation and Banquet at the London Guildhall. The cousin of Grand Duke and owner of two of the most prestigious wine estates in Bordeaux actually is the president of the International Wine and Spirits Competition. In his capacity of being the IWSC's president he awarded the Northern Hemisphere Trophy to the Peregrine Wines' Central Otago.
For further information about the event have a look here and here. Many pictures of the event can be found at IWSC's very own website and at Smile Photography.
Sources: IWSC Presidents, Peregrines Wines