I think this was referred to in a You-Tube video by Ben Norton. I can't find it now.

But, there's this lecture by Frances Stonor Saunders who wrote about the cultural Cold War:





The book on this by Saunders is an interesting read:

https://thenewpress.com/books/cultural-cold-war

It references how - amongst other things - Encounter Magazine (edited by Stephen Spender) was secretly funded by the CIA.

For older readers, Malcolm Muggeridge was also involved through his links to the FO.