MI5 Files: Fuchs' Confession

Fuchs was engaged in an altogether different type of subterfuge than the one MI5 was expecting. They discovered that he was having an affair with his boss's wife, Erner Skinner. The pressure eventually got to him and he went off for three days with Erner. And during those two nights it seems that he confessed to her. When this came out, the authorities' minds were blown. All that they knew was that Fuchs had apparently, on one occasion, passed some information about diffusion. But under interrogation in Harwell, Fuchs confessed to having spied from 1941 right through to 1949. He admitted to handing the closest guarded secrets of the atomic bomb, the plutonium bomb