Guinea Grill is a British restaurant and pub near New Bond Street in Mayfair, serving steaks, meat dishes, and pies. The menu includes steak, beef wellington, and Sunday roast, and the Guinness on tap has soft foam and a smoky taste. The restaurant is busy throughout the week and fills up at lunch, so reservations are required, and coats can be checked at the entrance. In the pub in the same space, customers sometimes shout loudly and aggressively.