DA-Notice
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In Britain, a DA-Notice (called D Notice until 1993) is an official request to news editors not to publish items on specified subjects, for reasons of national security.
The original D-Notice system was introduced in 1912, run as a voluntary system by a joint committee headed by an Assistant Secretary of the War Office and a representative of the Press Association.
In 1971 all existing D-Notices were cancelled and replaced by standing D-Notices that gave general guidance on what could be published and what could not, and what would require further advice from the secretary of the Defence, Press and Broadcasting Advisory Committee (DPBAC). In 1993 the notices were renamed DA-Notices.
As of 2006 there are five DA-Notices:
- DA-Notice 01:Military Operations, Plans & Capabilities
- DA-Notice 02:Nuclear and Non-Nuclear Weapons and Equipment
- DA-Notice 03:Ciphers and Secure Communications
- DA-Notice 04:Sensitive Installations and Home Addresses
- DA-Notice 05:United Kingdom Security & Intelligence Special Services
The term was also used in Australia during the Cold War period. Subjects which were the subjects of D-notices in Australia included the whereabouts of the Soviet defector Vladimir Petrov and his wife, and the operations of the U.S.-Australian joint defence communications facility at Pine Gap.
