there used to be, not sure if its still there a burger bar called micky finns outside the hippodrome in bristol they did the best garlic burgers i have ever tasted, you really didn't want to be to close to anyone after eating one though!
You could always make your own, look under greek meat balls for a simular recipe. I add corrander leave's, cumin,
pepper, woster sauce etc they are very nice.
I cant remember the whole thing right now.
Just get the other pressed round meat type out of peeps heads and fire up the bbq. why not make your own buns too.