Gillray’s occupies a large site inside the former County Hall (now a Marriott hotel), facing the Eye and Houses of Parliament. Be warned, however, that many tables in the restaurant don’t have good views, as they are set far back from the small windows.
Gillray’s majors in steak, Aberdeen Angus raised on English farms. There is a range of cuts both on and off the bone; the one to order if you're brave enough is the 'Bull's Head', a full kilo of meat on the bone. There are other mains as well if you're not a steakavore, and starters are mostly fairly simple presentations of well-chosen British produce. The oysters, at £9 for 6 or £18 for a dozen, are notably well priced for a restaurant of this type.
Breakfast is solid stuff and priced in accordance with Gillray's presence in an expensive London hotel. The Sunday roast rib of beef, by contrast, costs just £17.57 including a Bloody Mary. (Why £17.57? The satirist James Gillray, who gives the restaurant its name, was born in 1757.) The bar presents some interesting items, especially its excellent list of gins and a long list of cocktails that delve deep into history. And you can usually get a comfy seat.