Five Guys

Five Guys is an American fast-food chain in London that serves burgers and veggie sandwiches. Cheeseburgers and bacon burgers come with free toppings such as tomato and lettuce, and milkshakes can be mixed with multiple flavors. If ordering is difficult, say "all the way" to get every topping, and drinks come with unlimited refills. Even the Little size of fries is enough for two people to share.