This document establishes the legal framework and procedural requirements for the administration of the 1990 Census in Great Britain. The text is issued by the government of Great Britain under the authority of the Census Act 1920, providing the specific administrative rules, data collection parameters, and legal obligations for both the census authorities and the public. It serves as the primary regulatory instrument governing the scope and execution of the national population count for that year.

Legal professionals and historians utilize this document as a primary source for understanding the administrative protocols of the 1990 census. It is regarded as a standard technical reference for those studying the evolution of British census legislation and government data collection methods.