This statutory instrument establishes the formal legal designation and boundaries of specific ports within the Bristol Channel and Cardigan Bay regions. The document is issued by the authority of the United Kingdom government to define administrative jurisdictions for customs and excise purposes. It provides the legal framework necessary for the regulation of maritime traffic and the enforcement of port-related legislation within these geographic areas.

This document serves as a primary source for legal professionals and maritime historians interested in the regulatory history of British ports. Readers frequently note the technical and highly specific nature of the prose, which is intended for administrative compliance rather than general interest.