Top Secret

Intelligence, Bletchley, Interception, Cryptology, MI6/Secret Intelligence Service, etc

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  1. davidbfpo

    Ten avoidable problems which made the Royal Navy's encryption exploitable in 1939

    davidbfpo, Mar 26, 2022 at 3:09 PM
    Replies:
    1
    Views:
    75
    papiermache
    Mar 26, 2022 at 7:08 PM
  2. Ramiles

    WW2 Propaganda Maps...

    Ramiles, Mar 15, 2022
    Replies:
    2
    Views:
    125
    Ramiles
    Mar 15, 2022
  3. Rowbank

    Barnet Group photo 1942; Voluntary Interceptor

    Rowbank, Feb 23, 2022
    Replies:
    3
    Views:
    108
    Rowbank
    Feb 23, 2022
  4. davidbfpo

    A cautious collaboration: Between the UK and USA during WW2

    davidbfpo, Nov 13, 2021
    Replies:
    1
    Views:
    222
    davidbfpo
    Dec 15, 2021
  5. robin bird

    PB's top secret mtb mystery

    robin bird, Oct 31, 2021
    Replies:
    2
    Views:
    229
    robin bird
    Oct 31, 2021
  6. Dave Presland

    SCU4

    Dave Presland, Oct 31, 2021
    Replies:
    1
    Views:
    162
    4jonboy
    Oct 31, 2021
  7. Lindele

    OSS in GB 1944

    Lindele, Aug 29, 2021
    Replies:
    12
    Views:
    524
    Lindele
    Sep 6, 2021
  8. Cfaulkner74

    WAAF at RAF Tempsford

    Cfaulkner74, Jul 24, 2021
    Replies:
    4
    Views:
    398
    Harry Ree
    Aug 14, 2021
  9. Medblue60

    Specific ULTRA message/intercept – April 1945

    Medblue60, Apr 29, 2021
    Replies:
    11
    Views:
    552
    Nick Beale
    May 15, 2021
  10. davidbfpo

    Declassified Documents Online: Twentieth-Century British Intelligence

    davidbfpo, Mar 28, 2021
    Replies:
    0
    Views:
    526
    davidbfpo
    Mar 28, 2021
  11. davidbfpo

    The SOE / PWE training centre at Wall Hall aka STS 39

    davidbfpo, Feb 16, 2021
    Replies:
    6
    Views:
    2,158
    Quarterfinal
    Feb 21, 2021
  12. Ramiles

    David Cornwell - whose nom de plume was John le Carré

    Ramiles, Dec 16, 2020
    Replies:
    3
    Views:
    578
    Ramiles
    Mar 13, 2022
  13. Ramiles

    Censored and Military Postal History

    Ramiles, Nov 27, 2020
    Replies:
    1
    Views:
    439
    papiermache
    Nov 27, 2020
  14. Pember

    Mystery installation, North Africa?

    Pember, Sep 27, 2020
    Replies:
    11
    Views:
    798
    Robert-w
    Sep 28, 2020
  15. Dave55

    Head of Joint Chiefs of Staff Deceptive 'Sentimental Journey'

    Dave55, Aug 6, 2020
    Replies:
    3
    Views:
    666
    Jim Klag
    Aug 15, 2020
  16. gmyles

    RAF Military Mission in Russia

    gmyles, Jul 24, 2020
    Replies:
    0
    Views:
    493
    gmyles
    Jul 24, 2020
  17. Grasmere

    Barnes Wallis at Metropolitan Vickers

    Grasmere, Jun 18, 2020
    Replies:
    0
    Views:
    561
    Grasmere
    Jun 18, 2020
  18. Andrea Callin Tambosi

    ULTRA - constrasting source(s)

    Andrea Callin Tambosi, May 29, 2020 ... 2
    Replies:
    23
    Views:
    1,548
    Andrea Callin Tambosi
    Sep 8, 2020
  19. chipm

    Enigma Machine

    chipm, May 27, 2020
    Replies:
    19
    Views:
    1,240
    JDKR
    Dec 3, 2020
  20. von Poop

    TICOM - Target Intelligence Committee

    von Poop, May 6, 2020
    Replies:
    0
    Views:
    563
    von Poop
    May 6, 2020
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