Whitaker's is a reference book, published annually in the United Kingdom. It consists of articles, lists and tables on a wide range of subjects including education, the peerage, government departments, health and social issues, and the environment. The largest section is the countries directory, which includes recent history, politics, economic information and culture overviews. Each edition also features a selection of critical essays focusing on events of the previous year. Extensive astronomical data covering the forthcoming year is published at the rear of the book.