Asked by presenter Alison Hammond if it is true he reads the books, the Prime Minister laughed and said: “Yes that’s true. It’s unclear how that has emerged.”
He then name-checked Riders, Rivals, Polo, The Man Who Made Husbands Jealous and Appassionata, saying: “Those are my (favourites.)
“She’s done lots of different books, that’s the set of books that I like, those ones.”
The books are part of Cooper’s Rutshire Chronicles, set in the elite world of showjumping and polo and featuring the lothario Rupert Campbell-Black.
Asked about his biggest regret, Mr Sunak joked that it was having to discuss his passion for Cooper’s books, but continued: “They are good. You need to have escapism in your life, and that’s a good thing.
“So whether it’s whatever TV you watch, whatever you’re reading, it’s good to be able to get away from your day-to-day, right? And just go into a totally different place.”
Cooper’s novel Rivals, published in 1988, is currently being adapted into a TV series starring David Tennant, Aidan Turner, Emily Atack and Danny Dyer.
The Disney+ eight-part series will feature British actor Alex Hassell as Rupert Campbell-Black.