Sainsbury's is the biggest supermarket chain based in the United Kingdom. Sainsbury's originally sold only Food, but it now sells other things like Mobile phones, DVDs, Videos, Clothing, and Books. Sainsbury's is the second largest supermarket in the UK (after Tesco). The clothing range at Sainsbury's has changed a lot over the years. It started off with, Jeff & Co, then another range was brought in, after that Adams Kids. Now it's called TU. Sainsbury's sister store is called Argos.