Wiltons is far from your average establishment. Beginning as a shellfish-monger in 1742, the restaurant has been through several iterations in its 275-year history, during which it has acquired six royal warrants and a reputation for the best oysters in town. When Jimmy Marks came on board in the Second World War, he instructed his service staff to dress and behave like the schoolroom nannies who had raised his aristocratic clientele, setting the restaurant on course to be the club-like institution it is today. In celebration of its 275-year anniversary—which will be commemorated with a green plaque soon—the restaurant launches the first ever Wiltons Oyster Masterclass. Guests will be invited to test lots of oysters, including the Beau Brummell (deep fried and served with spiced mayo), and wash each taster down with Wiltons 275th Anniversary Special Cuvée Champagne. There’s delicious Chablis and Sancerre on hand, too, and you’ll go home with an embroidered Wiltons apron.