Eth3r’s link is class. I love “William the Concreter”.
There was an epsiode of the Simpsons with some good pun shop names, including “It’s a Wonderful Knife” and “Much Ado About Muffins”.
Back on food, I can’t believe that no-one’s mentioned the burger van that plys its trade around Dartmoor called “Hound of the Basket Meals”.