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
ULTRA/ZIP/PIN1-25: studies of the Abwehr and Abwehr and SD Covername lists
Catalogue reference: HW 19/312
What’s it about?
This record is about the ULTRA/ZIP/PIN1-25: studies of the Abwehr and Abwehr and SD Covername lists dating from 1943 Jan 29-1945 Jan 26 in the series Government Code and Cypher School: ISOS Section and ISK Section: Decrypts of German.... It is held at The National Archives, Kew.
Is it available online?
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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 19/312
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Date (When the record was created)
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1943 Jan 29-1945 Jan 26
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Description (What the record is about)
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ULTRA/ZIP/PIN1-25: studies of the Abwehr and Abwehr and SD Covername lists
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Note (Additional information about the record)
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Number 5 used twice, number 6 re-numbered as 12
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Held by (Who holds the record)
- The National Archives, Kew
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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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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/C10869100/
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- View this record page in our current catalogue
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Series information
HW 19
Government Code and Cypher School: ISOS Section and ISK Section: Decrypts of German...
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)
392 records
Within the series: HW 19
Government Code and Cypher School: ISOS Section and ISK Section: Decrypts of German...
You are currently looking at the piece: HW 19/312
ULTRA/ZIP/PIN1-25: studies of the Abwehr and Abwehr and SD Covername lists
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