Flora Solomon held Kim Philby's Soviet confession for two decades

By Harlan Pryce · August 17, 2026

She was a confidante to the Cambridge Five's most damaging traitor, yet the British Security Service did not hear her account until 1962

Kim Philby spent decades feeding the Soviet Union the names and secrets of his own colleagues, often signing their death warrants with a smile. Flora Solomon watched him do it, knowing exactly who he was, while the British government remained blind to the rot in its own house.

For more than twenty years, Solomon carried a secret that could have altered the course of the early Cold War. The public record remembers her as an influential Zionist and a pioneer for women's labor conditions at Marks & Spencer—a woman who described her own identity as a "personal trinity" consisting of a "Russian soul, Jewish heart, British passport." But that passport belonged to a state Philby was systematically dismantling from the inside.

A late-1930s confession

According to the file's catalogue entry for KV 2/4635, Solomon was a "friend and confidante" of Philby. It was within this circle of trust that the betrayal began. The archival description records that in the late 1930s, Philby confessed his role as a Soviet agent to her.

It was not a mere admission of ideological sympathy. The catalogue entry notes that Philby "tried to recruit her to help him." This was the standard operating procedure for the Soviet intelligence apparatus: find the vulnerable, the ideologically aligned, or the emotionally dependent, and bind them to the cause through shared guilt or shared secrets. Solomon claimed she refused the invitation to join his network of treason, but the refusal was only half of the story.

In the trade, silence is often a form of complicity. By refusing to report Philby's confession to the authorities in the 1930s, Solomon allowed one of the most destructive moles in the history of the British Intelligence services to continue his ascent. While she may have felt she had maintained her integrity by saying no to the recruitment, the result for the state was the same as if she had said yes: the traitor remained in place.

Burgess and the inner circle

Solomon did not move in a vacuum. The catalogue entry for KV 2/4635 indicates she also knew others in Philby's circle, specifically naming Guy Burgess. The association with Burgess—another of the Cambridge Five—suggests a social milieu where Soviet loyalty was the hidden currency of the elite.

This was the particular cruelty of the Cambridge ring. They operated in the overlap of high society and high government, using their social credentials as a shield. For a Russian émigré like Solomon, the attraction to these figures may have been cultural or intellectual, but for the Security Service, these friendships were the blind spots through which the Soviet Union viewed the inner workings of the West.

Related archival files provide the broader context of this infiltration. Records KV 2/4735, 4737, 4743, 4724, and 4725 all confirm the origin of Philby's betrayal. They state that Philby became a committed communist at Cambridge University in the early 1930s and was formally recruited in 1934 by Arnold Deutsch, an officer of the Russian Intelligence Services.

Reporting to MI5 in 1962

By the time Solomon decided to speak, the damage was largely done. The file's catalogue entry records that she did not report Philby's confession to British authorities until 1962.

Coming forward in 1962 was a matter of timing. Philby had already spent years dodging suspicion and would eventually defect to the Soviet Union in 1963. When she finally approached the Security Service, the catalogue entry states she gave an "apparently full account to MI5."

The use of the word "apparently" in the archival description is a typical piece of intelligence phrasing. It suggests a lingering skepticism on the part of the investigators—a question of why a woman of her standing would wait over two decades to report a confession of espionage. In the clandestine world, a late confession is often viewed not as an act of civic duty, but as a hedge against future exposure.

Whether Solomon was motivated by a belated sense of patriotism or a fear of her own associations, the timeline remains a stark record of failure. The distance between the confession in the late 1930s and the report in 1962 represents a generational gap in security.

The related files in the KV series continue to focus on the 1934 recruitment by Arnold Deutsch, leaving the specifics of Solomon's 1962 testimony to be parsed from the pages of the files themselves.