London, June 11: Secret files have at last revealed the identity of the top spy who transferred Britain’s atomic bomb secrets to the Soviet Union and paved the way for the nuclear standoff with the west, triggering the Cold War for nearly five decades.
Though the MI5 suspected him, trailed him and monitored his every move, they were never able to get the man, codenamed "Eric" by the KGB, whose espionage campaign to steal the Allies’ nuclear bomb plans was codenamed “Enormous”.
Declassified MI5 files have confirmed that the master spy, described as the "main source", was a Soviet mole at the Cavendish Laboratories at the University of Cambridge, the heart of the wartime nuclear research programme.
Today, 70 years later, with the opening of MI5 and KGB files, "Eric" can finally be identified as Engelbert (Bertie) Broda, whose story is a tale of espionage and counter-espionage, elaborate spycraft, love and deception.
Broda was the KGB’s prize spy, who fed Britain’s nuclear secrets to Moscow for a decade, including the blueprint for the early nuclear reactor used in the US Manhattan Project, Times online reported today.