This order establishes the regulatory framework governing the importation and exportation of trees, wood, and bark to prevent the spread of plant pests and diseases within Great Britain. The document is issued by the government of Great Britain to define the legal requirements for biosecurity in the timber and forestry sectors. It outlines the specific conditions under which these materials may be moved across borders to mitigate ecological risks.

This order serves as a foundational regulatory instrument for agricultural inspectors and legal professionals specializing in environmental compliance. Experts note that the text is written in highly technical legal prose intended for strict administrative enforcement.