Focus on
Olga Gray and the Woolwich Arsenal Spy Ring
In 1938, thanks to years of work by a remarkable female agent, MI5 ensured a package of British defence plans stayed secret.
Piece
Security Grading and Classification of Categories ('Top Secret' etc); Security Grading...
Catalogue reference: HW 69/8
What’s it about?
This record is about the Security Grading and Classification of Categories ('Top Secret' etc); Security Grading... dating from 1944 Mar 14 - 1945 Jun 05 in the series Government Code and Cypher School: Sigint Board and predecessors: Correspondence.... It is held at The National Archives, Kew.
Is it available online?
No, this record is not available online. However, you can order a copy. Other ways to view it.
Can I see it in person?
Yes, this record is held at The National Archives and is available to see in person. How to view it.
Full description and record details
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Reference (The unique identifier to the record described, used to order and refer to it)
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HW 69/8
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Date (When the record was created)
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1944 Mar 14 - 1945 Jun 05
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Description (What the record is about)
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Security Grading and Classification of Categories ('Top Secret' etc); Security Grading of Documents, etc (NIB [Noise Investigation Bureau] etc). 'Y' [Sigint] Board files containing correspondence on classification of documents
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Held by (Who holds the record)
- The National Archives, Kew
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Former department reference (Former identifier given by the originating creator)
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YB/113/T & YB/113/EE
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Legal status (A note as to whether the record being described is a Public Record or not)
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Public Record(s)
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Access conditions (Information on conditions that restrict or affect access to the record)
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Retained Until 2004
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Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
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Open Document, Open Description
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Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
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- Topics
- Intelligence
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C11204089/
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- View this record page in our current catalogue
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- Select an option and follow instructions
Series information
HW 69
Government Code and Cypher School: Sigint Board and predecessors: Correspondence...
See the series level description for more information about this record.
Catalogue hierarchy
Over 27 million records
This record is held at The National Archives, Kew
17,110 records
Within the department: HW
Records created or inherited by Government Communications Headquarters (GCHQ)
18 records
Within the series: HW 69
Government Code and Cypher School: Sigint Board and predecessors: Correspondence...
You are currently looking at the piece: HW 69/8
Security Grading and Classification of Categories ('Top Secret' etc); Security Grading...
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