The document discusses food shopping in Britain. It explains that traditionally people would shop at specialty shops like the baker, butcher, or greengrocer. However, supermarkets using self-service have become more popular. Sainsbury's and Tesco are two major supermarket chains, with Sainsbury's catering to wealthier customers and Tesco having lower prices. Most shops are open from 9am to 6pm, and the British are known for using "please" and "thank you" frequently in shops.