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.
Series
Government Code and Cypher School: Security of Allied Cyphers Section: Security Files...
Catalogue reference: HW 40
What's it about?
HW 40
This series contains files produced by the Security of Allied Cyphers Section, dealing with various aspects of work to prevent and counter enemy penetration of allied cyphers during the Second World War. A number of the files, though opened...
Full description and record details
-
Reference (The unique identifier to the record described, used to order and refer to it)
-
HW 40
-
Title (The name of the record)
- Government Code and Cypher School: Security of Allied Cyphers Section: Security Files on Allied World War II Communications
-
Date (When the record was created)
-
1917-1979
-
Description (What the record is about)
-
This series contains files produced by the Security of Allied Cyphers Section, dealing with various aspects of work to prevent and counter enemy penetration of allied cyphers during the Second World War. A number of the files, though opened during the war, include later material.
The series includes records of GC&CS's correspondence with the Oxford University Press about wartime production of printed forms and other material required by the School, and with Mansfield College, Oxford about the wartime occupation of the college for cypher work.
-
Held by (Who holds the record)
- The National Archives, Kew
-
Former department reference (Former identifier given by the originating creator)
-
22A and 22B
-
Legal status (A note as to whether the record being described is a Public Record or not)
-
Public Record(s)
-
Language (The language of the record)
-
English
-
Creator(s) (The creator of the record)
- Foreign Office, Government Code and Cypher School, 1922-1946
-
Physical description (The amount and form of the record)
-
274 file(s)
-
Access conditions (Information on conditions that restrict or affect access to the record)
-
Open unless otherwise stated
-
Immediate source of acquisition (When and where the record was acquired from)
-
In 2001-2005 Government Communications Headquarters
-
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))
-
Custodial history (Describes where and how the record has been held from creation to transfer to The National Archives)
-
Government Code and Cypher School until 1946, then Government Communications Headquarters
-
Accumulation dates (The dates the record was accumulated)
-
Series ran 1943-1945
-
Accruals (Indicates whether the archive expects to receive further records in future)
-
No future accruals expected
-
Selection and destruction information (Information about how the record was selected for archiving)
-
These records contain information significant in the conduct of the Second World War and have been selected for permanent preservation in accordance with the PRO acquisition policy (para 2.2.1.3).
-
Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C15600/
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)
You are currently looking at the series: HW 40
Government Code and Cypher School: Security of Allied Cyphers Section: Security Files on Allied World War II Communications
You may be interested in
-
-
Focus on
The Spycatcher affair
The book Spycatcher sparked one of the most controversial courtroom battles of the 1980s, bringing questions around state secrecy to a global audience. -
Record revealed
‘The Book of Negroes’: Black refugees who fought in the American Revolution
This volume offers a glimpse of the numerous ‘Black Loyalists’ who seized the American Revolutionary War as a chance to gain freedom from enslavement.
Related records
Records that share similar topics with this record.