unnecessary gas torches at restaurants

Several restaurants in London have their entrances "decorated" with gas torches which burn all night, even though the street is well-lit, and the decorative effect is questionable.  

Unfortunately, the ensuing energy consumption and the unnecessary warming up to the air is unquestionable.

My husband and I have written letters to the restaurants, and to the council, but to no avail. I hope that many people would stop visiting these restaurants.