Difference between revisions of "MI5 B Branch (1938-1953)"

Revision as of 22:43, 18 October 2013

MI5 B Branch was a key investigative branch of MI5 from the 1920s to the 1940s.

History

In 1929, an early incarnation of B Branch was responsible for 'investigations and inquiries'.^[1]

Following a 1938 re-organisation, B Branch acquired responsibility for counter-espionage and counter-subversion.^[2]

Post-1953

MI5 B Branch

In Dick White's 1953 re-organisation of the service, B Branch became responsible for personnel and establishments.^[3]

Organisation

Directors

Joseph Ball - 1926.^[4]
Oswald Allen Harker^[5] - c.1929.^[6]
Guy Liddell - 1939-45^[7]
Dick White c.1946.^[8]
John Marriott - C.1951^[9]

B1

Counter-subversion.^[10]

Roger Hollis - B1 c.1946.^[11]

Bla

Double agent section.^[12]

Thomas Argyll Robertson - B1a. c.1941.^[13]
John Marriot^[14]
Christopher Harmer^[15]
Hugh Astor^[16]
Cyril Mills^[17]
Charles Cholmondeley.^[18]
Ronnie Reed^[19]

B1b

Analysed Abwehr decrypts and other intelligence related to the double-cross system.^[20]

B1d

London Reception Centre.^[24]

B1e

Camp 020 wartime interrogation centre.^[25]

Captain Robin Stephens

B1f

Maxwell Knight - B1F c.1939.^[26]

B1G

Counter-Spanish espionage.^[27]

B2

Counter-espionage.^[28]

R.T. Reed - B2b c.1952.^[29]

B4

Responsible for Soviet counter-espionage.^[30]

James Robertson - B4, 1946.^[31]
Kathleen Archer - B4a c.1939.^[32]
Roger Hollis - B4a(3) c.1939.^[33]

B3a

Liased with security Intelligence Middle East. Responsible for dealing with Zionist terrorism and other Middle Eastern matters.^[34]

Other Officers

William Alexander - 1919.^[35]

Notes

↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.127.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.134.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.327.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.126.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.98.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.127.
↑ Chris Hastings and Fiona Govan, MI6 urged Churchill to nuke Berlin The fear of Germany's V2 rockets in 1944 led Britain to consider the ultimate reprisal, Sunday Telegraph, 1 December 2002.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.580.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.324.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.263.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.248.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.285.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.251.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.285.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.287.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.251.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.134.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.261.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.324.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.331.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.264.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.
↑ Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.352.
↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.150.

[1] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.127.

[2] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.134.

[3] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.327.

[4] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.126.

[5] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.98.

[6] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.127.

[7] Chris Hastings and Fiona Govan, MI6 urged Churchill to nuke Berlin The fear of Germany's V2 rockets in 1944 led Britain to consider the ultimate reprisal, Sunday Telegraph, 1 December 2002.

[8] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.

[9] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.580.

[10] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.324.

[11] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.263.

[12] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.248.

[13] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.

[14] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.285.

[15] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.

[16] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.

[17] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.251.

[18] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.285.

[19] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.287.

[20] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.

[21] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.

[22] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.

[23] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.

[24] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.251.

[25] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.250.

[26] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.134.

[27] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.261.

[28] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.324.

[29] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.331.

[30] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.

[31] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.264.

[32] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.

[33] Chapman Pincher, Treachery: Betrayals, Blunders and Cover-Ups: Six Decades of espionage, Mainstream Publishing, 2012, p.66.

[34] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.352.

[35] Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.150.

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@@ Line 28: / Line 28: @@
 *[[Hugh Astor]]<ref>Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.</ref>
 *[[Cyril Mills]]<ref>Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.251.</ref>
-*[[Charles Cholmondeley.<ref>Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.285.</ref>
+*[[Charles Cholmondeley]].<ref>Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.285.</ref>
 *[[Ronnie Reed]]<ref>Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.287.</ref>
 ====B1b====
 Analysed [[Abwehr]] decrypts and other intelligence related to the double-cross system.<ref>Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.249.</ref>