Animal use in the United Kingdom in 2001

The United Kingdom publishes detailed, descriptive, annual statistical reports on the use of animals for experimental and other scientific purposes. This paper describes the method by which the statistics are compiled and the nature of the information collected. It provides a brief overview of the number of animals used, the patterns of use, and key trends for calendar year 2001. The limitations of the published data, and other classes of information that should be provided, are discussed.