Analysis of information sources in references of the Wikipedia article "John Cairncross" in English language version.
Because he was in MI5 they learned things from him. This doesn't make him the fifth man, and he wasn't
(from full text) Until his death two years ago, Cairncross, a former pupil of Hamilton Academy and graduate of Glasgow University, attempted to minimise the extent of the secrets he passed to the Soviet Union.
(from full text) Until his death two years ago, Cairncross, a former pupil of Hamilton Academy and graduate of Glasgow University, attempted to minimise the extent of the secrets he passed to the Soviet Union.
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