Which? is a consumer advocacy organization based in the United Kingdom. It provides independent reviews and comparisons of products and services to help consumers make informed choices. Founded in 1957, Which? conducts tests and research on a wide range of items, from electronics to household goods. In addition to product reviews, Which? offers advice on consumer rights and issues. The organization publishes a monthly magazine and maintains a website where members can access detailed reports and guides. Which? aims to empower consumers by providing trustworthy information and promoting fair trading practices.