Tucked in a tight cellar in Covent Garden, Food for Thought serves up hearty vegetarian food. This popular spot usually has a queue leading up the stairs and out the door, and there's precious little space inside, expect to share tables, if you can get one, with strangers. Steaming bowls of soup and enormous servings of quiche are served in earthenware bowls and service is cheerful and quick. The menu changes daily, so there's no chance of getting tired of this restaurant, and they even offer their own cook book so you can try all the recipes at home. You leave feeling full, healthy and great. Tube: Covent Garden