The monkey puzzle

Here's what can be found in an article about the late Robin Cook, a.k.a. Derek Raymond:

“By five we are still discussing the people he has known around Soho: (…) Also the little-known novelist Veronica Hull, author of The Monkey Puzzle, a roman a clef which caused a scandal in the Fifties by lifting the lid on Freddie Ayer's activities with his female students.”