HC Deb 20 November 1986 vol 105 c299W
Mr. Cohen

asked the Secretary of State for the Home Department how the disclosing of the absolute number of certificates signed by him under section 27 of the Data Protection Act will affect national security.

Mr. Waddington

It would undermine the purpose for which exemptions under section 27 of the Data Protection Act 1984 exist if detailed information about them were made public. I do not believe that details of the number of certificates signed can sensibly be considered in isolation from other aspects of section 27.