4 Best Restaurants in St. James's, London

A sophisticated crowd enjoys the sumptuous and elegant decor at this classic brasserie at the back of the royal grocer, Fortnum & Mason. An old-school trolley arrives table-side to serve Siberian sturgeon caviar with scrambled eggs, baked new potatoes, and blinis, while creamy beef Stroganoff and whole duck with elderberry sauce get the full table-side-flambé treatment. Truffles that are shaved at the table are another specialty. The popular Welsh rarebit toasty has a punchy mustard kick, while nostalgic desserts include a fleet of alcoholic ice-cream floats. It's open all day, with an unusually long five-hour window for lunch bookings—perfect if you want to take a break from shopping nearby.

London's most opulent dining salon here at The Ritz would impress even Marie Antoinette with its sumptuous Gilded Age rococo revival trompe-l'oeil frescoes, tasseled silk drapery, and towering marble columns. Sit at the late Margaret Thatcher's favorite seat overlooking Green Park (Table 1) and luxuriate in unreconstructed British haute cuisine, such as langoustine à la nage or beef Wellington, carved table-side. Don't miss the crêpes suzette, which are flambéed table-side by the maître d'. The chef's five- and seven-course set menus are also a delight.

A glitzy procession of famous faces, media moguls, and hedge-funders comes for the spectacle, swish service, and soaring elegance at this bustling Viennese-style grand café on Piccadilly. Located in a former Wolseley Motors luxury-car showroom, this brasserie begins its long decadent days with breakfast at 7 am (8 am on weekends) and serves Dual Monarchy delights until 11 pm (10 pm on Sunday). Don't be shy about popping by (they welcome walk-ins) for dishes like kedgeree, steak tartare, chicken soup with dumplings, or Wiener schnitzel. For dessert, go for an éclair, and don't forget to return to savor the classy afternoon tea.

Lords, ladies, and other assorted aristocrats blow the family bank at this Edwardian bastion of traditional English fine dining on Jermyn Street (the place first opened near the Haymarket as a shellfish stall in 1742). Posh patrons tend to order half a dozen oysters, followed by grilled Dover sole, Blythburgh pork from the carving trolley, or fabulous native game, such as roast partridge, grouse, or teal. There is also soft herring roe on toast, plus pleasing desserts like Peach Melba or sherry trifle.