Military Intelligence 8 (M.I.8) Tracking Illicit German Radio and GAF Beams Transmissions

[Observer1940]

I wondered if anyone has researched or been researching the work of M.I.8 the Radio Security Service who were involved with the tracing and tracking of illicit German Radio and German Air Force Radio Transmissions in 1940?

According to RCM and Cabinet documents one of the members of MI8 sat on some of the RCM Whitehall meetings in 1940.

I note in the July 1940 MI 8 War Diary (attached) that MI 8 had VHF Detachments on our coasts and likely listening out for the German Air Force VHF / Lorenz based Navigation Beams.

Although there is no mention of MI 8 in the index of Stephen Twigge's Intelligence book, I have found several brief references to M.I. 8 in his book.

The 1940 files in WO 208 at TNA, Kew of M.I.8 are extremely disappointing to date and their War Diary is far, far too brief to detail even their weekly work, let alone their daily work.

Mark