Annie Machon joined MI5 in 1990 and worked in counter-subversion and Irish-terrorism investigations before resigning in October 1996 with colleague David Shayler. The pair alleged that MI5 maintained secret files on politicians, conducted unlawful telephone taps, misled government overseers, and possessed advance knowledge of attacks including the 1994 bombing of the Israeli Embassy in London. They also alleged British involvement in an attempted assassination of Muammar Gaddafi. These claims were reported by The Mail on Sunday and other outlets, but the supplied source does not establish that every allegation was independently proven; a court injunction restricted reporting on some IRA-related claims.
Shayler supplied classified documents to the press, triggering legal proceedings under the Official Secrets Act. After living in hiding and exile, the pair returned to Britain in August 2000; Shayler was convicted and imprisoned for six months in November 2002, while Machon was never charged. The episode demonstrated the legal risks of exposing intelligence operations and kept questions about parliamentary oversight, targeted surveillance, and accountability in public debate. Machon later became a campaigner on privacy and electronic mass surveillance, addressing the European Parliament’s civil-liberties committee in 2013.