This book investigates the historical development and legal framework of the United Kingdom's secret patent system, which allows the government to suppress technical inventions in the interest of national security. Author Tom H. O'Dell examines the evolution of legislation that permits the state to classify patent applications as Official Secrets, thereby preventing their public disclosure. By analyzing the interplay between inventors, politicians, and civil servants, the text provides a comprehensive overview of how technical innovation has been managed under the shadow of state secrecy. The study utilizes archival records and information released under the thirty-year rule to construct its argument.

Experts recognize this work as a specialized contribution to the history of technology and administrative law in the United Kingdom. Readers frequently note the clarity with which the author navigates complex legal history and bureaucratic procedures.