https://en.wikipedia.org/wiki/Nicky_Hilton_Rothschild her husband James Rothschild
is son of https://en.wikipedia.org/wiki/Victor_Rothschild,_3rd_Baron_Rothschild
"Rothschild joined the Cambridge Apostles, a secret society, which at that time was predominantly Marxist" "Rothschild was recruited to work for MI5 during World War II in roles including bomb disposal, disinformation and espionage, winning the George Medal for "dangerous work in hazardous circumstances"
"3rd Baron Rothschild, of Tring, co. Hertford [U.K., 1885], 27 August 1937.
4th Baronet Rothschild [U.K., 1847], 27 August 1937.
Knight Grand Cross, Order of the British Empire (G.B.E.), 1975.
Knight, Most Venerable Order of the Hospital of St. John of Jerusalem (K.St.J.).
Fellow, Royal Society (F.R.S.), 1953.
Major, Intelligence Corps."
"In Who Paid the Piper? (1999), an account of CIA propaganda during the Cold War, author Frances Stonor Saunders alleges that Rothschild channelled funds to Encounter, an intellectual magazine founded in 1953 to support the "non-Stalinist left" in advance of US foreign policy goals.

After the war, he joined the zoology department at Cambridge University from 1950 to 1970. He served as chairman of the Agricultural Research Council from 1948 to 1958 and as worldwide head of research at Royal Dutch/Shell from 1963 to 1970.

Flora Solomon claims in her autobiography that in August 1962, during a reception at the Weizmann Institute, she told Rothschild that she thought that Tomás Harris and Kim Philby were Soviet spies."