Not to be confused with Graham Mitchell (scientist)
Deputy Director General
Mitchell came under investigation as a potential double agent during his tenure as Deputy Director General (DDG) of MI5. In May 1963, Arthur Martin and Peter Wright deduced that he was a potential Soviet mole, and he was placed under surveillance in his own office until his retirement on 6 September 1963.
- NameBase MITCHELL GRAHAM RUSSELL
- Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.507.