Soviet penetration of nuclear work was not confined to British scientists. Several countries and institutions faced penetration, while MI5 itself was seriously compromised. Some information reaching the Soviet Union may also have been allowed through as part of intelligence games. The passage distinguishes uncontrolled espionage from deliberate disclosure and warns that strong ideological commitments can override institutional duty.
Notable Point · 2:37:10-2:37:57
Why nuclear espionage cannot be reduced to one group
The discussion broadens nuclear espionage from individual scientists to compromised institutions, deception, and ideologically motivated networks.