This legislative order establishes the legal framework for the extension of the Security Service Act 1989 to specific British Overseas Territories. The document, issued by the government of Great Britain, serves as a formal instrument of constitutional and administrative law. It defines the jurisdictional reach of the Security Service (MI5) beyond the United Kingdom, clarifying the operational authority and legal constraints within these territories.

Legal scholars and government practitioners view this order as a foundational document for understanding the extraterritorial application of British security law. It is frequently cited in administrative law research concerning the constitutional relationship between the United Kingdom and its overseas territories.