Peter Wright's allegations

Ex MI5 man pledges to expose Russian spies in UK agencies

The Observer, July 22 1984
with David Leigh

The MI5 officer who led the hunt for some of Britain's most notorious postwar spies has compiled a highly sensitive dossier about Russian penetration of MI5.
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MI5 and CIA suspected Harold Wilson was Russian agent

The Observer, July 22 1984
with David Leigh, John Ware and Paul Greengrass

The former Labour Prime Minister, Mr Harold Wilson, now Lord Wilson of Rievaulx, was investigated three times between 1963 and 1974 by his own security service after hints from a Russian defector that he was under Soviet control. No evidence against him was ever found.
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Wilson government gave Russian spy suspect access to GCHQ

The Observer, July 29 1984

Oxford philosopher Sir Stuart Hampshire was allowed to conduct an official in-depth review of the GCHQ eavesdropping network at Cheltenham even though the Security Service, MI5, was simultaneously investigating an allegation that he was a Russian spy.
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Peter Wright: fighting treachery and cover-up in MI5

The London Daily News, March 13 1987

"My name is Peter Wright. For 20 years, from 1955 to 1976, I was a senior officer of MI5... When I left the service, I signed an undertaking not to indulge in any publicity without the consent of the service. I now propose to break this undertaking." From The Security Of The United Kingdom written by Peter Wright in 1984.
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