This statutory instrument establishes the specific date upon which the Thames Regional Flood Defence Committee assumes its legal powers and administrative functions. The document serves as a formal legislative mechanism enacted by the British government to operationalize flood management infrastructure within the Thames region. It provides the necessary legal framework to transition authority to the committee, ensuring that flood defense protocols are enforceable under the Water Act 1989.

Legal professionals and historians categorize this as a standard administrative instrument used for the formalization of government bodies. It is viewed as a foundational document for understanding the regulatory history of water management in the United Kingdom.