The report details the activities and oversight of the Security Service during the 1990-91 session. This document serves as the official annual report from the Office of the Security Service Commissioner for Great Britain, covering the period of 1990-91. It outlines the functions and operational oversight of the Security Service, providing an account of its activities and adherence to its mandate during that fiscal year. The report is structured to inform Parliament and the public about the Service's performance and the Commissioner's review.

As an official government report, its reception is primarily within governmental and security circles, serving as a record of accountability and oversight. The document is intended for parliamentary review and public information regarding the Security Service's operations. Its value lies in its factual reporting and the transparency it provides into the workings of a key security agency during a specific historical period.