Piece
Accessions administration: HW 49
Catalogue reference: PRO 57/15778
Date: 2002 Jan 1 - 2002 Dec 31
Accessions administration: HW 49
Piece
Instructions of 19 April 1945 (together with Admiralty implementation papers), to...
Catalogue reference: HW 49/7
What’s it about?
This record is about the Instructions of 19 April 1945 (together with Admiralty implementation papers), to... dating from 1945 Apr 19 in the series Government Code and Cypher School: Special Liaison Units: Histories. It is held at The National Archives, Kew.
Is it available online?
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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 49/7
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Date (When the record was created)
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1945 Apr 19
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Description (What the record is about)
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Instructions of 19 April 1945 (together with Admiralty implementation papers), to be seen by all cleared for ULTRA that they are never to reveal, mention, hint at, write or lecture about the ULTRA secret (together with rationale for this ban); issued by Group Captain F W Winterbotham
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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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Access conditions (Information on conditions that restrict or affect access to the record)
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Retained Until 2006
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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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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C11280570/
How to order it
- View this record page in our current catalogue
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Series information
HW 49
Government Code and Cypher School: Special Liaison Units: Histories
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)
8 records
Within the series: HW 49
Government Code and Cypher School: Special Liaison Units: Histories
You are currently looking at the piece: HW 49/7
Instructions of 19 April 1945 (together with Admiralty implementation papers), to...
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