Soviet Agents Infiltrate Atomic Labs and French Communist Party
By Vera Kessler ·
Harry Frederick Houghton passed classified material from 1951 to 1961 while Arthur Adams used a business cover to target the US atomic bomb project.
The file's catalogue entry records the arrest and trial of members of the French Communist Party on charges of Soviet espionage. This record, listed under catalogue reference KV 3/147 at The National Archives in the United Kingdom, identifies itself as part of the Security Service's Subject (SF series) Files.
Paris, the PCF, and Soviet Agents
In the mid-century geopolitical landscape, the French Communist Party (PCF) was not merely a political entity but a primary node for Moscow's influence in Western Europe. The catalogue entry for KV 3/147 confirms that the British Security Service was tracking this relationship, specifically focusing on a "Russian espionage organisation in France." While the record describes a process of arrests and trials, the catalogue entry does not list the names of the defendants or the specific nature of the secrets they are alleged to have passed.
For an analyst, the presence of this file in the SF series suggests a thematic approach to intelligence gathering. The Security Service was not merely tracking individuals, but the organizational logic of the PCF as a front for Soviet intelligence. The entry refers to a trial occurring "during the period," but the catalogue description stops short of specifying the exact years, leaving a gap where the timeline should be.
Arthur Adams and the Atomic Project
When viewed alongside other records in the KV series, the French case becomes part of a broader map of Soviet penetration. The Security Service's Personal (PF Series) Files reveal a pattern of targeting high-value technical and military secrets across the West.
Catalogue entry KV 2/3788 describes Arthur Alexandrovitch Adams as "one of the most important Soviet espionage agents known to have operated in North America." According to the description, Adams entered the United States illegally under business cover in 1938. His operational goals shifted in the 1940s, when his specific task became the penetration of the US atomic bomb project.
This suggests a coordinated effort by Soviet intelligence to embed agents in the most sensitive scientific and political spheres of the Allied powers. While the French Communist Party members in KV 3/147 provided a political and organizational base, agents like Adams provided the surgical extraction of military secrets.
Smersh on the Eastern Front
The reach of the Soviet apparatus extended beyond the infiltration of Western parties and atomic labs. File KV 5/23 contains a captured German document, likely originating with the Abwehr in 1943, which provides a translation of Soviet counter-espionage methods on the Eastern Front.
The catalogue entry notes that this document gives details on the "organisation and methods of the counter-espionage service of the NKVD and of the Smersh." The name Smersh—an acronym for Smert Shpionam or "Death to the Spies"—underscores the brutality of the Soviet internal security system during the war. This internal ruthlessness mirrored the external ambition seen in the recruitment of agents in the UK and France.
The Portland Case
The Security Service's files also capture the opportunistic nature of Soviet recruitment. Catalogue entries KV 2/4381, KV 2/4477, and KV 2/4482 all concern Harry Frederick Houghton, a British clerk in the Admiralty Underwater Detection Establishment at Portland.
The records state that Houghton was convicted of espionage in 1961. He had conspired with another employee, Ethel Gee, to pass classified material to the Soviet Union. According to the PF series descriptions, all indications are that Houghton had been operating as a spy from 1951 until his arrest.
Unlike the political convictions of the French Communist Party members or the deep-cover business façade of Arthur Adams, the Houghton case represents the vulnerability of the clerical class—low-level employees with access to high-level technical data.
The catalogue entry for KV 3/147 leaves the specifics of the French trials unresolved. It notes that the file documents the arrest and trial of PCF members, but the description does not state the outcome of those proceedings or the number of convictions.