§ Mr. Denzil Daviesasked the Secretary of State for Defence what was the value in pounds sterling, and at constant prices, of the plutonium which was exchanged with the United States of America for other materials in each year from 1971 to the latest available date under the United States-United Kingdom defence agreement of 1958 as extended.
§ Mr. PattieIt has been the custom of successive Governments not to disclose details of transactions relating to special nuclear materials used for defence purposes.