This document establishes the legal framework and regulatory requirements governing the production, certification, and marketing of seed potatoes in England and Wales. The text serves as a statutory instrument issued under the authority of the Plant Varieties and Seeds Act 1964, detailing the specific standards for seed potato classification and trade. It functions as a formal administrative directive to ensure agricultural quality control and compliance within the specified jurisdiction.

Legal professionals and agricultural administrators utilize this text as a historical record of regulatory standards for the 1990 period. Experts note that while the document is now revoked, it remains a critical reference for understanding the evolution of seed potato legislation in the United Kingdom.