Canning Town was a place Rose Tyler once suggested had a Fatboys Burgers. She thought it might be a bit closer than Phijax IV, where the Tenth Doctor suggested there were "the best all-night steak joints in the universe". (COMIC: The Glutonoid Menace)
Behind the scenes
Although the comic doesn't specifically say Canning Town is in London, the gag doesn't work unless you assume Rose is talking about somewhere close to her home. And, appropriately, Canning Town in real life is on the East End, just as is the Powell Estate.