When traveling to another country for the first time, one of the first things I like to do is pop into a grocery store. Grocery stores are often the only places open in the wee hours of the morning after stepping off a transcontinental flight, and they offer an immediate peek into the real flavor of life. When I was in London a few weeks ago I found the supermarkets impressively glossy and dizzyingly well-stocked. I know we have a lot of readers in the U.K. so I wanted to ask you what you think of your grocery stores. Where do you shop most?