The mystery of Lord Victor Rothschild’s (1910-1990) connections to Soviet intelligence has vexed researchers for over a half century now. As the scion of an ultra-wealthy banking house and confidante to Winston Churchill, Rothschild was an influential figure in Britain’s power elite for decades, occupying key positions in counterintelligence, the energy sector and strategic policy planning. But was he also the notorious Cambridge Spy Ring’s “Fifth Man,” a spy for Moscow who could access the crown jewels of UK secrets?

The Cambridge network – consisting of Kim Philby, Guy Burgess, Donald Maclean, Anthony Blunt, and John Cairncross – has gone down in history as one of Soviet secret service’s most successful penetrations, to the shame of the British establishment. Long after their exposure, Rothschild was well-situated as a grey cardinal of UK politics, seemingly untouchable.
https://exploringrealhistory.blogspot.com/2018/12/victor-rothschild-soviet-spy.html