Guy Liddell

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Guy Liddell was a senior MI5 officer.

In 1933, Liddell accompanied Frank Foley, the Berlin station chief of MI6, on a liaison visit to Nazi Germany.[1]

In the post-war period, Liddell was seconded to deal with security for the Atomic Energy Authority.[2]

Liddell was the internal candidate to head MI5 at the retirement of Sir David Petrie in 1945, but was passed over by Clement Attlee in favour of Percy Sillitoe.[3] Along with Roger Hollis and Dick White, Liddell was said to be among the officers who tried to undermine Sillitoe, a former Chief Constable of Kent.[4]

John Costello's 1988 Mask of Treachery speculated that Liddell was the so-called Fifth Man, in a Soviet Spy Ring, later named by Christopher Andrew and Oleg Gordievsky as John Cairncross.[5]

External resources


  1. Francis Stonor Saunders, Stuck on the Flypaper, London Review of Books, 9 April 2015.
  2. David Leigh, The Wilson Plot, Mandarin, 1989, p.5.
  3. David Leigh, The Wilson Plot, Mandarin, 1989, p.22.
  4. David Leigh, The Wilson Plot, Mandarin, 1989, p.23.
  5. David Wise, Molehunt: How the Search for a Phantom Traitor Shattered the CIA, Avon Books, 1992, p.112.